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BRENT JESSEE RECORDING & SUPPLY, INC.

1566 West Algonquin Road #111

Hoffman Estates, IL 60192

Voice Phone 847-496-4546, Monday-Friday 8AM to 4PM USA Central Time

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e-mail: brentjes@audiotubes.com

12AX7 TUBES CURRENTLY IN STOCK


This page lists all of the 12AX7 tubes I currently have in stock, including all industrial and European versions. It is a long page, use your scroll button and scroll down the page to see it all. This list is organized now by each vintage tube manufacturer. Be sure to scroll to the bottom of the page to see every brand we have.

These are extremely high demand vintage tubes, so I have these listed on their own page, as my stock changes rapidly. If you need a quantity of these tubes, or have specific needs such as matching, special construction, etc., please e-mail me. NOTE: Our inventory is being simplified to show that we either have adequate stock on hand ("in stock"), are out of stock ("temporarily out of stock"), or stocks change very rapidly with rare, high demand tubes ("call/e-mail"). Stock levels with actual quantity on hand shown are being phased out as we update inventory. The only exception to this will be very scarce tubes where we typically will only have a small stock on hand. Of course, any time you need a large quantity of tubes of any type, is is a good idea to email us for a stock check first.

NEW! CURVE TRACER MATCHING AVAILABLE! We can match most small signal preamp tubes on a Tektronix 576 curve tracer. Scroll down to watch the video on this page. The curve tracer runs the tube at full rated plate voltage, and plots the curves at 10 different grid bias levels. The most accurate method to test tubes, the curve plots can actually be compared to the printed examples for each tube type that appear in the manufacturer technical data sheets and books. Each triode of a 12AX7 can be compared both internally (balanced) and to other tubes (matched). Curve tracer internal balancing, or matching of two or more tubes on the curve tracer, adds $10.00 per tube to the cost and is done upon request. Prices listed below for "matched pair" tubes are Gm matching only, and there is no additional charge for Gm matched pairs. For most uses, Gm matching is fine. Curve tracer matching would be recommended if the tubes are to be used in a phase inverter circuit, phono or microphone preamp, or other critical or demanding circuit. Curve tracer matching is an additional special request item and is charged in addition to the listed price of the single or matched pair tubes on this page.

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An Important Note About NOS Tubes. Please Read.

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JUMP DIRECTLY TO THE 12AX7 TUBE LIST

Starting off with a quote from a client: "I just wanted to let you know how great the 12ax7  I ordered sounds. As soon as I installed it my preamp went dead silent , so silent that I thought it was off. With the other tube I was using I really thought I had some other problems , from a bad power cable to a bad grounding cable. Just goes to show how crap new tubes are. Thanks again, B. B."

Sound interesting? Read on:

The 12AX7 is a high-mu twin triode which operates in typical service as a class A amplifier, in the preamp stages of high fidelity, musical instrument, and public address amps, as well as professional line and microphone preamps, and many other audio and communications devices. The demand for the vintage USA and European versions of this tube are beginning to outstrip the supply, and, as a buyer, you need to carefully consider what is available, the device you will use it in, and what your budget allows. The highly regarded vintage brands of Telefunken, Mullard, Amperex, and RCA come at an appropriate premium price over other brands. While this higher price is justified (these tubes sound wonderful and are very long lived) other vintage brands are often just as good. Brands like GE, Sylvania, Tung-Sol, Motorola, Raytheon, and Zenith are often overlooked, but usually perform just as well as the more famous vintage brands, which makes them a terrific value, especially as the stocks of New Old Stock (NOS) tubes vanishes. Indeed, some of these were made by RCA for these other labels, and others like the Tung-Sol and Sylvania have their own followers who prefer these brands over the higher priced premium labels. There is intense hype out there about the 12AX7, and even some absolute fantasies. Some of the European labels have strong snob appeal, which can cloud accurate judgment of these very good tubes, and many self-proclaimed tube experts have either praised or shot down some vintage brands which deserve neither. If you are new to tubes in general, or are replacing a set of Russian or Chinese current production 12AX7 tubes with vintage NOS, you would do well to try several different brands and hear for yourself the sonic nuances. Then you would be well advised to lay in a stock of the brand of your choice "for a rainy day".

The main differences with this family of tubes are as follows:

12AX7: the original version of this tube. This can only be used in parallel filament circuits. This is not a big deal as virtually all audio equipment is of a parallel filament design. These often have large rectangular plates with several horizontal ribs. The older versions have blackplates, which are often preferred by audiophiles.

12AX7A: This version can be used in series or parallel filament circuits. These usually date to the 1960s and have greyplates. Vintage versions of these are about the most sought after tubes of any type today. Often RCA and GE made these for electronic organ manufacturers, and have the organ brand name on the label. These are usually specially selected tubes, and are a great buy---when available! Sometimes, 12AX7A tubes made for the US Military are labeled 12AX7WA, and I have seen WB and WC versions. The W is the military type code, A,B, and C are progressively later productions. These are nice military spec tubes. DO NOT confuse these with current production Russian or Chinese crap with the suffix WX, WB, or WC! These are not military tubes and are not NOS tubes at all!

ECC83: This is the European version of the 12AX7, and is identical to it. Most tubes with ECC83 listed on the label are European, and the ones in demand are Telefunken, Amperex, Mullard, and Siemens. More difficult to find but worth seeking are German made Valvo and the early Holland made Philips Miniwatt and Philips "SQ". Telefunken tubes have a diamond shape molded into the glass on the bottom center of the tube. The most desirable of the Telefunken ECC83 tubes is the "smoothplate" or "flatplate" versions. Like the name implies, the dull grey plates are perfectly smooth. It does not matter if some of these on the market are labeled for Fisher or Dynaco, as Telefunken made these tubes for many OEM applications. They are the EXACT same tube regardless of the label. Watch for the rare Telefunken smoothplates with a cloth label on the glass marked "selected tube". Often these have red painted tips, and watch for blue painted tips, and laboratory grade smoothplates made for Leeds & Northrup as well. These were all screened for critical use in medical equipment, with the "selected tube" or L&N versions being the best. Grass Instruments also had a yellow tip version which was even lower noise, but they are rare and difficult to find these days. All of the red, yellow, and blue tips are incredibly quiet and very three dimensional in sound. Amperex and Mullard tubes have a pair of alpha-numeric date codes printed in dark grey near the bottom of the tube. The rarest of these are the BugleBoy cartoon tube label for Amperex (especially if it also has the treble clef music symbol next to the Bugleboy image), and the older Mullard logo that looks like a shield, especially with the letters "BVA" below it. Watch for the Mullard "10M" series of ECC83 tubes in the distinctive royal purple and gold boxes. These sweet tubes were factory screened for a 10,000 hour heater life, matching internal triodes, and low noise, rather like the Telefunken ECC803S tubes. The 10M Master Series has gold plated pins, and the 10M Concert Series has standard pins. Demand and scarcity has driven the price of these babies to record heights lately. The 1950s versions of Mullard and Amperex (and some rare Siemens) tubes often had long narrow plates, with D or square getters, and are the scarcest and finest sounding of these two brands. The 6L13 is the rarest of the longplates, made for ultra low noise. They are nearly impossible to find today. BEWARE: the Amperex Bugleboy and Telefunken smoothplates are being faked! The fake Amperex may have the words "Bugleboy" and the cartoon tube on the box, and the label will not wash or wipe off. The fake Telefunken may have gold pins (real Telefunken ECC83 tubes had only standard pins) and a perfect, baked enamel label that won't wipe off. Our tubes are carefully screened for fakes when we obtain them, and are guaranteed genuine.

7025: This is the low noise, "industrial" version of the 12AX7. This has a spiral wound filament which reduces hum and noise. These are usually the best choice for demanding hi-fi applications, although the premium brands and blackplate types also have very low noise.

ECC803S, E83CC, E803CC, 6L13: This is a premium European version of the ECC83. The "S" indicates Special, and these tubes were screened for low noise and matching internal triode elements. These are rare in the USA. Telefunken and Siemens are the brands most often spotted, although several of the Mullard factories made these for various labels. Most of the Telefunken and Siemens tubes had gold plated pins. BEWARE: I have seen smoothplate Telefunken ECC83 tubes on auction sites with aftermarket gold plated pins, being passed off as NOS ECC803S tubes!! The ECC803S is a frame grid tube, and it's inside construction is different from a smoothplate. The ECC83 smoothplate or ribbed plate Telefunken tubes NEVER had gold pins! Be careful, and get a solid return policy like ours whenever you buy costly tubes like these. Sometimes the E83CC also carried the 12AX7WA military type label, even though it is a European made tube. The build quality and performance of these tubes are similar to the Mullard 10M type listed above, although the sonics will differ between German, Dutch, and British tubes. The 6L13 is rarely seen, and then usually only in a Mullard made longplate, but these are well worth the high price they command. They were made for other brands as well but all have the 6L13 on the label.

B759: This is an ultra-low noise version of the 12AX7, with matched triode elements. To my knowledge, only Genalex (Marconi-Osram Valve Co.) made these in England for their "Gold Lion" series. Extremely rare in the USA.

12DF7: This rather rare tube was only produced in the USA. It is an excellent replacement for any 12AX7, ECC83, or 7025 and is an improvement on these tubes. It was engineered to be very low noise and very low microphonics, designed for industrial and professional applications and equipment where high performance from the tube is critical. Seen with Westinghouse labels or OEM industrial equipment labels or part numbers, sometimes pasted right over the Westinghouse label. A great tube if you can find them, perfect for audio use!

12AD7: Another very rare tube that was primarily made for and found in recording equipment, also engineered to be very low noise. Since virtually all of these were meant for audio applications, they are all virtually guaranteed to be low noise and low microphonics. Long out of production and rarely found today. Most of what we have seen is Mullard Japan Matsushita manufactured and are of excellent quality. Sometimes found in old Roberts and Aiwa hi-fi and recording equipment. These make a great upgrade to any preamp, amp, or professional recording equipment that uses a 12AX7 or 7025. Better try them now, or miss out!

7729: This is another industrial tube like the 12DF7 above, manufactured for critical industrial, avaition, or medical uses. This tube is nearly always seen as CBS manufacture, and has thickly plated gold pins. Sometimes the equipment manufacturer put their part numbers or ID label right over the CBS label. Rarely found today but sometimes boxes of them turn up in the back hangars of avaition equipment suppliers and small aircraft maintainence shops. Superior in every way for audio use!

6681: This is listed in some tube manuals as a "special 12AX7", otherwise the electrical specs are the same as the standard version. Being an industrial type it most likely has a ruggedized filament, and is built to withstand many on-off cycles. I believe only RCA made these, regardless of brand on the label. UPDATE: One astute customer has informed me that GE offered 6681 tubes with the typical top seams, date codes, and "Gt. Britain" marking that indicates English Mullard manufacture. Indeed, some GE 12AX7 and 7025 tubes from the 1970s were also Mullard made, so they must have made some 6681s for GE as well. Overall, the 6681 is an excellent step up in quality from the standard 12AX7, and is a bargain at current prices.

5751: This version was usually the one made for the US military. These have a lower gain than the 12AX7, but are otherwise totally compatible. Great hi-fi tubes, as the lower gain reduces noise and microphonics. These are all ruggedized and most can withstand a drop on the floor. The internal triode elements are matched as well. The early versions are more sought after as they usually have extra support rods and an extra mica spacer on top of the plate structure ("Triple Mica"), as well as blackplates, all said to contribute to low microphonics. Don't overlook the greyplate versions, they are also excellent tubes, and many of these have the triple mica as well. The GE non-military version is usually the "five star" series, intended for broadcast use. The RCA broadcast type is the "Command" series. Both the RCA and GE broadcast types are scarce, as are any of the triple mica types.

OK, SO TELL ME HOW THEY SOUND!!

A tough question if there ever was one! The best advice is to get a few types and hear for yourself the good sounds you have been missing. All of these vintage tubes are excellent, much better than the Russian or Chinese yuck that is being made today. When replacing any stock Russian, Chinese, or East Europe tube with any of these vintage NOS types, you will notice immediately that the midrange glare is gone. Gone too is that honky, boxy quality, and the tiring upper midrange screech that current production tubes are famous for. Here are some VERY GENERAL observations about some of these vintage tubes:

TELEFUNKEN, SIEMENS, VALVO, LORENZ, and other German made NOS: These tubes are usually characterized by an impressive open "air" at the top end. The soundstage is large, even in mono applications these tubes have a great 3-D image. The midrange is ruler flat, and the bass is tight and accurate. These tubes have a fine sense of dynamics, and most are impressively quiet. These are not "warm" tubes, and to some ears their lack of midrange warmth may be heard as bright. I tend to think of them as accurate, and their clean, focused sonic image is astonishing. My personal favorites. Check out Siemens longplates, Telefunken smoothplates, or Siemens E83CC for critical phono preamp or microphone preamp work. Same goes for the Telefunken "selected tube" and the tubes with blue tips that were intended for critical medical equipment. These tubes are dead quiet, ruler flat, laboratory grade beauties that will knock your socks off! The Siemens, Valvo, and Lorenz are often priced lower than the more well-known Telefunken, and can be a great bargain since their sonics are similar to the highly regarded Telefunken. Oh, and here is a little secret: the Telefunken ribbed plates sound pretty much the same as the smoothplates! In spite of the "shootouts", and "Some Guy's Tube Lore", and other claims to the contrary, the sonic differences between these two tubes (made in the same era at the same factory) are small (the rib plates are a bit warmer in the midrange) and very subjective. Don't let anyone tell you what tubes you should like and what you should not like!

AMPEREX, PHILIPS, MAZDA and other Holland/France/Belgium made NOS: These tubes are a great balance of a clean, airy top end, nice midrange warmth, and accurate bass. They are very pleasant, clean, and musical to listen to in hi-fi applications. Unlike other clean European tubes, these break-up impressively when overdriven in a guitar amp. Check out the Mazda 12AX7S silver plates for critical phono preamp or microphone preamp duties. These tubes are dead quiet, with a great sense of air and dynamics, with incredible speed and impact. The Philips Miniwatt series, usually made in the same Heerlen, Holland factory that produced the Amperex Bugleboy tubes, are a great alternative to the increasingly rare Bugleboy. They are identical internally, carry the same factory code markings, and sound the same. These Holland tubes can often be found, sometimes made for other brands or OEM labelled for amplifiers, when the Bugleboys cannot. The rare longplate versions are the same sonically, but with even more soundstage space and detail. The rare French Mazda has the air and sparkle of the Telefunken, the touch of warmth of the Amperex, and adds a nice bit of dynamic punch to the sound.

MULLARD, GENALEX, BRIMAR, and other British made NOS: Like a warm British jacket of the finest tweed, these glorious tubes have an attractive sweet warmth in their midrange and lower regions. The top end is silky and pleasant, without being rolled-off. The best of these tubes retain a fine sense of "air" at the top, and the upper midrange is smooth and liquid. These tubes reproduce the human voice, especially female voices, with haunting realism. The rare longplates and Genalex versions have an eye-popping huge soundstage, razor sharp focus and detail, and an uncolored top end while retaining the warmth of the lower priced versions.

RCA, RAYTHEON, GE, SYLVANIA, and other USA made NOS: This group is very diverse. The RCA, Raytheon, and Sylvania blackplates are among the best here. These are very musical tubes with air and sparkle at the top end, warmth in the mids, and great bass. The RCA are drop dead beautiful in guitar amps, even the lower priced greyplate and longplate versions. They also have a wonderful "phat" gritty sound when overdriven in these amps. The blackplates and most tubes made for organs are very quiet. The greyplate GE is an all-around nice-guy tube to listen to, the longplate here possibly getting the nod for hi-fi use. The Sylvania greyplate and military versions are clean and a bit bright, but the Sylvania 5751 variants are very balanced and pleasant to listen to for hours. The GE blackplate 5751 triple mica is also in great demand as a very musical vintage tube. The RCA 5751 is more like the Mullard, with a rich warmth and wide bandwidth. Currently, the USA made tubes are a nice surprise with their low prices as compared to the European types.

Please e-mail me if you have any questions about these tubes.

Watch a brief video here on available tube balance and matching services for dual triode tubes like the 12AX7 on the Tektronix 576 curve tracer!

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Watch a brief video here on available tube noise testing on our new noise test fixture:

 

Tube

Description

Price Each

Quantity In Stock

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Quantity in Stock new listing categories: "In Stock" = we got 'em, come and get 'em! "Temporarily Out of Stock" = Dang it, we just ran out, but check back real soon! "Call/e-mail" = these are rare tubes and stock changes quickly. Please call us for the latest inventory, and we can often outsource these tubes for you.

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See new stock listing key at left

Tektronix 576 curve tracer matching services for any tube

Curve tracer matching goes far beyond the resolution of the typical Gm tube tester! We can usually match tubes to within 500 micro amps of plate current under full rated plate voltage. If you have a sensitive application for a pair of these tubes, matching on the curve tracer is recommended. Allow an extra day or so for this careful and accurate testing to be done. Results provided on a special data label on the tube box.

Add $10.00 per tube or $20.00 per pair

See the video above for more details.

Sensitive noise test fixture testing services for any tube

Special noise testing services can be provided for your tubes. If you have a highly sensitive application such as a phono or microphone preamp, additional testing on our specially designed class A noise test fixture is recommended. This noise test operates the tube at rated voltages in an autobiasing class A amplifier circuit, and tests for noise and microphonics at maximum amplification of the tube. The results are measured both audibly and on an oscilloscope. This will weed out tubes that may not be suitable for extremely sensitive amplification applications.

Add $5.00 per tube or $10.00 per pair.

See the video above for more details.

B759 Ultra-low noise premium 12AX7, Genalex RARE premium "Gold Lion" series, made in England. EXTREMELY RARE.

New Old Stock original box. Original Genalex UK 1960s made tubes, these are NOT the current Russian made versions. These are the much sought after "Gold Lion" series made by Genalex, with the gold lion logo on the glass. The B759 is a very low noise Genalex UK made 12AX7, with matched triode elements. These two are in the original boxes, one is still sealed in the plastic, both have their original Genalex Gold Lion test paperwork in the boxes. The ultimate vintage audiophile tube!

$950.00

call/e-mail

Watch a brief video showing the rarest 12AX7 vintage tubes!

Click the screen at left.

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Tube

TELEFUNKEN

Telefunken logo

Price Each

Quantity in Stock

Telefunken ECC803S, diamond mark, Ultra-low noise premium 12AX7, gold pins. EXTREMELY RARE.

New Old Stock in original box. Among the rarest tubes in the world, this beauty is mint in original box! This is a very low noise, special quality 12AX7, made with the old-style Telefunken German precision. These have the ultra wide bandwidth of the Telefunken ECC83, but also have nice matched internal triodes, gold pins, and have been carefully factory screened for low noise. These tubes are currently soaring in value as stocks of them vanish.

call/e-mail

call/e-mail

12AX7 Grass Medical YELLOW TIP SELECTED TUBE label, very rare medical equipment grade smooth plate, diamond mark MATCHED PAIR

As rare as the famous ECC801S, these are the elusive YELLOW TIP grade SELECTED TUBE made only for Grass Medical equipment, primarily EEG machines. The yellow tips indicated the very highest grading, and most still have the original yellow paint on the tips to prove it. The yellow tip and cloth SELECTED TUBE label indicates exhaustive after-market testing for low noise, uniform output, freedom from microphonics or physical defects, long heater life, and even, uniform cathode emission. Hickok tested, and then ear tested in a preamp! The finest Telefunken diamond mark smoothplates, NOS, is what these rare tubes are based upon. These have the SELECTED TUBE cloth label, or run number lab label, and were only available as spare parts for Grass medical equipment. Critical use in hospital or aerospace test equipment demanded tubes with super low noise, and tightly controlled output, and these beauties deliver! The ultimate tube for tube mics and mic preamps! Very fine, very rare tubes, in great demand, especially this smoothplate version. Excellent labels on these. These are all Tele labeled, and have the "selected tube" cloth label. All are the real deal, with the diamond mark in the bottom glass. These are rare matched pairs, with transconductance tightly controlled internally and from tube to tube. Incredibly accurate, the amazing sound image emerges out of a dead quiet background. Compare prices.....you get a pair of these for less than ONE ECC803S!!! SINGLE TUBES ARE $245.00!! The best of the best!!

$495.00 per pair

out of stock

12AX7 Telefunken / Leeds & Northrup, Tektronix, or SELECTED TUBE label, very rare medical equipment grade smooth plate, most red-tipped, diamond mark MATCHED PAIR

AT LAST, another good size stock just in of these incredible tubes! Hickok tested, and then ear tested in a preamp! The finest Telefunken diamond mark smoothplates, NOS, some in original box, that have been further screened for low noise, low microphonics, and balance. The red tips indicated very high grading, and most still have the original red paint on the tips to prove it. These have the SELECTED TUBE cloth label, or run number lab label, and were only available for the Leeds & Northrup or Tektronix test equipment market, or Grass medical equipment. Critical use in hospital or aerospace test equipment demanded tubes with super low noise, and tightly controlled output, and these beauties deliver! The ultimate tube for tube mics and mic preamps! Very fine, very rare tubes, in great demand, especially this smoothplate version. Excellent labels on these. These are all Tele labeled, and have the "selected tube" cloth label, or have the L&N lab run numbers on them (L&N part number 1022106 or 22-1-0-6). All are the real deal, with the diamond mark in the bottom glass. These are rare matched pairs, with transconductance tightly controlled internally and from tube to tube. Incredibly accurate, the amazing sound image emerges out of a dead quiet background. Compare prices.....you get a pair of these for less than ONE ECC803S!!! SINGLE TUBES ARE $225.00!! The best of the best!!

$450.00 per pair

out of stock

12AX7 Telefunken smooth plate, COMMENTS

Brent- Wanted to let you know that the Telefunken 12AX7 Medical Grade I ordered last week arrived safe and sound, and oh, what a difference! The Ruby tube it replaced in my phono stage was clearly the weak link in my system. With the Telefunken, I immediately got a huge improvement in detail, attack, and overall musicality. Especially noticeable was the improvement in the sound of percussion instruments, particularly cymbals, where I couldn't previously make out the strike of the sticks or brushes on the instrument - just a blurry ongoing ring. With the new tube, the front edge of every strike is distinct, bringing the sense of pace and rhythm to new heights. The effect on plucked strings and articulation in brass instruments was equally impressive. All in all, it sounds like a totally different system. Thanks for the great pick! Best, AJ *************************************** Dear Brent,   Received the three matched pairs Telefunken 12ax7s. Was chomping at the bit during 'burn in'. Was worth the wait, the equipment was connected to the Snell Eiis'. First the CD, Boito, Introduction to Metistofele performed by the Shaw choir and orchestra, blown away. Next CD, Carmina Burana, Solti and the Cleveland Orchestra, blown away a bit further down. Third, LP, Beethoven's, Emperor concerto, Curzon and the Vienna P.O. Fourth, LP, Mozart, Piano Concerto 21, Gulda, Abbado and the Wiener Philharmoniker. Fifth, LP, Madeleine Peyroux , Half a Perfect World. Top it off with the Beatles, Butcher Album.   I have rediscovered the music I have available and listen for one whole day to nothing else but music. What a joy ! Thank you for your assistance, you have one happy customer. E.S.

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12AX7 Telefunken smooth plate, BLUE TIPPED medical equipment grade, diamond mark, MATCHED PAIR

The finest Telefunken diamond mark smoothplates, NOS, in OEM medical equipment box or whitebox. MORE PAIRS JUST IN.....These are all Telefunken labeled, an all have the blue painted tips indicating extensive screening for use in medical equipment. Very fine tube, in great demand, especially this smoothplate version. Nearly all excellent labels on these. These do not have the cloth "selected tube" labels but are still medical graded tubes that were Grass Instrument (mainly for EEG machines) stock. All are the real deal, with the diamond mark in the bottom glass. These are rare matched pairs, with transconductance matched to within 2 percent. These pairs have been tested in my amplifier for noise, stereo balance and image, and microphonics, then reconfirmed the match on the tube tester. These are dead quiet at full volume, not microphonic, and sound great! You can't get rare quality and careful hand selection like this on eBay!! SINGLE TUBES ARE $150.00 WHEN AVAILABLE.

$299.00 per pair

out of stock

12AX7 Telefunken smooth plate, diamond mark, MATCHED PAIR

The finest Telefunken diamond mark smoothplates, NOS, in whitebox. MORE PAIRS JUST IN.....These are all Telefunken labeled. Very fine tube, in great demand, especially this smoothplate version. All are the real deal, with the diamond mark in the bottom glass. These are rare matched pairs, with transconductance matched to within 2 percent. These pairs have been tested in my amplifier for noise, stereo balance and image, and microphonics, then reconfirmed the match on the tube tester. These are dead quiet at full volume, not microphonic, and sound great! You can't get rare quality and careful hand selection like this on eBay!!

$230.00 per pair

In Stock

12AX7 Telefunken smooth plate, diamond mark, made for other brands or no label MATCHED PAIR

The finest Telefunken diamond mark smoothplates, NOS, in whitebox. Very fine tube, in great demand, especially this smoothplate version. Fair to excellent labels on those with labels. Save big on these as some are made for Dynaco, some for Fisher, some not labeled. All are the real deal, with the diamond mark in the bottom glass, same tube as the Telefunken labeled tubes listed above. These are rare matched pairs, with transconductance matched to within 2 percent. These pairs have been tested in my amplifier for noise, stereo balance and image, and microphonics, then reconfirmed the match on the tube tester. These are dead quiet at full volume, not microphonic, and sound great! You can't get rare quality and careful hand selection like this on eBay!!

$190.00 per pair

In Stock

12AX7 Telefunken made ribbed plate, diamond mark, some OEM labels MATCHED PAIRS

NOS in white box. Very fine tube, in great demand. Nice Telefunken, Dynaco, and Fisher labels on these. All are original Telefunken diamond bottom marked tubes, some OEM labeled for various brands of amps as they were replacement stock. These beauties are hand matched to within 2 percent transconductance. These fine pairs have been tested on an oscilloscope and in my amplifier for noise, stereo balance and image, and microphonics, the the match reconfirmed on the tube tester. Dead quiet at full volume and no microphonics. A sound very much like the smoothplates, phono-stage or microphone-preamp quiet, with perhaps a bit more warmth in the lower midrange, at a big savings!

$175.00 per pair

In Stock

12AX7 Telefunken ribbed plate, diamond mark

NOS in white box. Very fine tube, in great demand. Fair to very nice original labels on these. A sound very much like the smoothplate, phono-stage or microphone-preamp quiet, with perhaps a bit more warmth in the lower midrange, at a big savings. A few are OEM labeled, but are genuine diamond bottom Telefunken tubes.

$75.00

In Stock

12AX7 Telefunken smooth plate, diamond mark

NOS, in whitebox. Very fine tube, in great demand, especially this smoothplate version. Good to fair labels on these, genuine German Telefunken with diamond mark.

$115.00

In Stock

12AX7 Telefunken smooth plate, OEM or blank label, diamond mark

NOS, in whitebox. Save on these same smoothplates but have other brands on the labels, or blank labels. Very fine tube, in great demand, especially this smoothplate version. Good to fair labels on these, genuine German Telefunken with diamond mark, most labelled for Dynaco, Mazda, or Fisher.

$99.00

in stock

Tube

MAZDA

Mazda logo

Price Each

Quantity in Stock

Mazda France SILVERPLATE TRIPLE MICA 12AX7S low noise early 1960s. VERY RARE. MATCHED PAIR

New Old Stock in original boxes. CLIENT COMMENTS: "The 12AX7 select Mazda tubes came in the mail today in fine shape. I put them in my preamp section of the MA2275 and I can hear a considerable difference over the regular smooth plate Telefunken. These select Mazda tubes have more detail and are very, very clear. I'm extremely satisfied with these tubes and all the tubes you provided. All the Best, M.M." This is a very low noise, seldom seen military silver plate 12AX7. This tube has an incredibly clear tone that works well in both hi-fi and guitar amp applications. These have the sonics and punch of the silver plates and the low noise of an S type tube, not to mention the low microphonics of a triple mica! Add to this the quiet background, and incredible 3-D soundstage these tubes create, make these about the best silverplates ever made! 1960s French Mazda date codes, some have military markings including the crossed flags of the French Signal Corps. Carefully matched, a very rare chance to grab a matched pair of these superb vintage tubes. SINGLE TUBES ARE $200.00 EACH.

$430.00 per pair

out of stock

Mazda France SILVERPLATE 2 mica 12AX7. VERY RARE. MATCHED PAIR

New Old Stock in original boxes. This is a very low noise, seldom seen silver plate 12AX7. This tube has an incredibly clear tone that works well in both hi-fi and guitar amp applications. These have the sonics and punch of the silver plates at a savings! Add to this the quiet background, and incredible 3-D soundstage these tubes create, make these about the best longplates ever made! 1960s French Mazda date codes, some have military markings including the crossed flags of the French Signal Corps. Carefully matched, a very rare chance to grab a matched pair of these superb vintage tubes. SINGLE TUBES ARE $175.00 EACH.

$375.00 per pair

In Stock

Mazda France 1964-1965 vintage 12AX7S made for CSF-Thomson, Ultra-low noise premium instrumentation grade 12AX7, BLACKPLATE, standard pins. VERY RARE. MATCHED PAIR

New Old Stock in white boxes. This is a very low noise, seldom seen special quality 12AX7. These have black plates and two thick wide silver supports for the top getter. Silver labels and all date coded 1965 and 1964. The sonics are quite similar to the even-rarer Mazda silver anode, and the "S" suffix insures factory testing for low noise like the famous Telefunken ECC803S. Carefully matched, a very rare chance to grab a matched pair of these superb vintage tubes. TWO GREY LONGPLATES IN STOCK. SINGLES ARE $125 EACH.

$250.00 per pair

In Stock

R/T France 1960s vintage 12AX7S military or ORTF (broadcast type), Ultra-low noise premium 12AX7, greyplate, standard pins. VERY RARE. MATCHED PAIR

New Old Stock in original and white boxes. This is a very low noise, seldom seen special quality 12AX7. This tube has an incredibly clear tone that works well in both hi-fi and guitar amp applications. Early 1960s French R/T manufacture with the R/T tube logo in green on the glass, 1 pair made for Dario/Miniwatt, some marked with ORTF, the French radio-television association, indicating broadcast quality tested. The sonics are quite similar to the even-rarer Mazda silver anode, and the "S" suffix insures factory testing for low noise like the famous Telefunken ECC803S. Carefully matched, a very rare chance to grab a matched pair of these superb vintage tubes. SINGLES ARE $100 EACH.

$230.00 per pair

In Stock

CV4004 /12AX7S Mazda France RTC label, made for military, box plates

New Old Stock in R/T military boxes. More stock just in! A rare boxplate from France, that has been factory screened for low noise and has the "S" suffix for "special" or "select". These are virtually the same as the 1960s Mullard boxplates, with that incomparable European sweetness. Welded grey boxplates, halo getter, 12AX7S old RTC white label on the glass. In excellent condition, and very RARE in matching pairs! SINGLE TUBES ARE $100.00 EACH!

$225.00 per pair

In Stock

Mazda France 1960s vintage 12AX7, greyplate. VERY RARE. MATCHED PAIR

New Old Stock in original and white boxes. This is a very low noise, seldom seen 12AX7. This tube has an incredibly clear tone that works well in both hi-fi and guitar amp applications. These greyplates have the sonics and punch of the silver plates at a savings! Many who have heard these for the first time say they beat the Telefunken ECC803S in sound quality! 1960s French Mazda date codes, these tubes were made for various brands intented for sale in France. Carefully matched, a very rare chance to grab a matched pair of these superb vintage tubes. SINGLE TUBES WHEN AVAILABLE ARE $100.00.

$200.00 per pair

In Stock

Mazda 5751 SILVER ANODE France 1962, TRIPLE MICA, RARE, Premium industrial grade 12AX7

New Old Stock in original box. VERY scarce silver anode French Mazda 5751 tubes with triple mica, like the equally rare 12AX7S Mazda tubes, but with the lower gain of a 5751. Punchy, quiet, and very detailed with incredible dynamic range. These are not often available, and I don't forsee finding more in the near future. Get yours today! SINGLE TUBES ARE $175.00 EACH.

$350.00 per pair

out of stock

Mazda 5751 greyplate France, TRIPLE MICA, RARE, Premium industrial grade 12AX7

New Old Stock in original box. VERY scarce French Mazda 5751 tubes with triple mica, like the equally rare 12AX7S Mazda tubes, but with the lower gain of a 5751. Punchy, quiet, and very detailed with incredible dynamic range. These are not often available, and I don't forsee finding more in the near future. Get yours today! SINGLE TUBES ARE $110.00 EACH.

$225.00 per pair

1 single

Tube

MULLARD

Mullard logo

Price Each

Quantity in Stock

CLIENT COMMENTS ON MULLARD 12AX7 NOS STOCK

Hello Brent, I received the tubes last Friday. Tried them yesterday and my god were you right! Made an A/B comparison with my new production JJs and the difference was simply unreal. Never heard such detail come from that amp... incredible string definition even at high amounts of gain...  complex and beautiful overtones.... increased response... I still can't believe it. Then I put the JJs back in to make a last check. It sounded like a broken radio. Fizzy noise, all articulation lost, ear piercing trebles. And I thought I had a perfectly good tone. What have I been doing with that amp all my life? I am particularly impressed at how you were able to nail the guitar tone I was searching for. They bring exactly what I wanted: more power, more musical distortion, but also more definition! I want to thank you for that. It was my first NOS experience and I was kinda skeptic. Now I've really understood how they make a difference (you'd have to be deaf not to notice!). Time for me to stock up with more of those in the near future, so you'll be hearing more from me! Thanks again. S. A.

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Mullard 10M Ultra-low noise premium 12AX7, GOLD pins, made in England. EXTREMELY RARE.

New Old Stock in original box. The 10M series by Mullard is a British tube classic, and these are very scarce in the USA! 10,000 hour rated heater life, matched triodes, low noise and low microphonics screened. These have the ultra wide bandwidth of the Telefunken, but with just a touch of midrange warmth. The labels are somewhat faded from sitting in the crumbling foam rubber liner of the box, which is typical of these that are still in original boxes after 40 plus years. The gold pin 10M version is the most sought after, consistently rated one of the best 12AX7 tubes of all time on many audiophile message boards and websites. These tubes are currently soaring in value as stocks of them vanish. MATCHED PAIRS ARE $999.00.

$499.00

call/e-mail

Mullard 10M type 12AX7, Ultra-low noise premium 12AX7, standard pins, made in England. EXTREMELY RARE.

New Old Stock in original box. The 10M series by Mullard is a British tube classic, and these are very scarce in the USA! 10,000 hour rated heater life, matched triodes, low noise and low microphonics screened. These have the ultra wide bandwidth of the Telefunken, but with just a nice sense of midrange warmth. Excellent original yellow label. These tubes are currently soaring in value as stocks of them vanish. MATCHED PAIRS ARE $900.00!

$450.00

1 single tube

6L13 RARE 12AX7 Mullard LONGPLATE, Square getter, very rare series labelled "Mazda Valve 6L13", same 1957 date codes, MATCHED PAIR

New Old Stock in whiteboxes. An early, limited production low noise version made for Mazda by Mullard, with the famous, elusive longplates and the distinctive early square top getter element. Even more awesome is finding a matched pair of these gems. The first generation of Mullard 12AX7 tubes, identical September 1957 vintage Blackburn factory date coded. The best is the sound of these jewels, which is unsurpassed. These are carefully matched, and tested for low noise and microphonics. As good or better than the famed Mullard 10M goldpin series, at a lower price! VERY RARE, this is the first 6L13 type I have seen in 12 years! ONE SINGLE AVAILABLE AT $250.00.

$500.00 per pair

call/e-mail

12AX7 Mullard LONGPLATE, Square getter, 1950s date codes, MATCHED PAIR

New Old Stock in whiteboxes. Rare early square getter Mullard, with the famous, elusive longplates. Even more awesome is finding a matched pair of these gems. The first generation of Mullard 12AX7 tubes, 1950s vintage Blackburn factory date coded, some made for brands of amps. The internal construction is identical to the rare 6L13 above, they were from the same production! The best is the sound of these jewels, which is unsurpassed. These are carefully matched, and tested for low noise and microphonics. As good or better than the famed Mullard 10M goldpin series, at a lower price! Good stock in right now, however these are VERY RARE, another decade and these may be gone forever!

$475.00 per pair

In Stock

12AX7 Mullard LONGPLATE, Square getter, 1958 and 1956 date codes VERY RARE.

Tested as New Old Stock in whiteboxes. A rare early square getter Mullard, with the famous, elusive longplates. These have an even Gm match between the internal triode elements, and are tested for low noise and microphonics. Several are made for Amperex with the Bugleboy logo. If you only need a single 12AX7, this is a rare chance to get one of the best ever made!

$220.00

In Stock

12AX7 Mullard LONGPLATE, halo getter, Blackburn, UK 1958 or 1959 date codes MATCHED PAIRS

New Old Stock in original box and whiteboxes. The elusive, never-been-reproduced long narrow plate Mullard 12AX7! These all have a near even Gm match between triode elements, two percent or better match between tubes, and excellent white "Eico by Mullard", "Heath by Mullard", or Mullard shield logo labels. These have become incredibly hard to find (especially in pairs) in just the last year! Good stock now, but better not wait!

$325.00 per pair

In Stock

12AX7 Mullard LONGPLATE halo getter, Blackburn UK 1958, 1959 date codes

New Old Stock in original box and whiteboxes. The elusive, never-been-reproduced longplate Mullard 12AX7! These all have an even Gm match between triode elements, halo getter, and excellent white labels. Priced per single tube.

$160.00

In Stock

12AX7 Mullard selected "Electronics for Medicine", halo getter, Blackburn, UK RARE MATCHED PAIRS

New Old Stock in whiteboxes. The elusive, specially selected "Electronics for Medicine" 12AX7! These have the entwined snake logos of the medical profession, and are not often seen made by Mullard. Made for medical and hospital equipment, these rare tubes will cure your sonic ills and make your system sound better than ever! These all have a near even Gm match between triode elements, two percent or better match between tubes, and excellent white "Electronics for Medicine" logo labels. Super low noise. These have become incredibly hard to find (especially in pairs) in just the last year. SINGLE TUBES ARE $150 EACH.

$325.00 per pair

Out of Stock

12AX7A / CV4004 / M8137 RARE Mullard boxplate military type, NEW LOWER PRICE!

New Old Stock in industrial boxes, made in Great Britain. This tube is the famed CV4004 military version, and has the grey rectangular box plates. These are Mullard with the Mullard factory code. These have that sweet British sound, unquestionable Mullard quality, and rapidly becoming extinct!! Priced per single tube. MATCHED PAIRS, WHEN AVAILABLE, ARE $250.00.

$125.00

out of stock

12AX7 Mullard rare yellow shield logo, halo getter, standard plates MATCHED PAIRS

New Old Stock in original box and whiteboxes. Rarely seen in the USA, the yellow shield logo tubes are from the early 1960s, only made for 2 years, and rival the longplates in quality. We have a few hand selected pairs with excellent labels. SINGLE TUBES ARE $100.00 EACH.

$200.00 per pair

call/email

12AX7 or 7025 Mullard white shield logo/ white label/ IEC Mullard white label / or Brimar white label type, standard plates

New Old Stock in original and whiteboxes, all with the Blackburn, UK factory code. 1960s date coded Mullard quality that has yet to be equalled. Magnificent old Mullard vintage tubes with Mullard labels, all 1960s stock, and some say these sound better than the older versions. Try some and you be the judge. These tubes are in incredible demand today. Some made for Philips or other brands. These are standard plates, not the longplates, but were made right after the longplates. A few in stock made by Brimar as well. MATCHED PAIR $199.00 PER PAIR.

$99.00

In Stock

12AX7 Mullard

New Old Stock in whiteboxes. Late 1960s vintage, made in Great Britain, some unlabeled; some for Bogen, Knight, Fisher, Gold Aero, IEC Mullard, Amperex, Hammond Organ, Haltron, Tronal, GE and RCA. All are genuine Blackburn, UK Mullard factory made. These have that sweet Mullard sound at a lower price! Fully tested as NOS, and fully satisfaction guaranteed. CLIENT COMMENTS: Hi Brent, Just got the valve and all I can say is what a difference in sound, WOW!!!! Top end lifted and low end became more tight, solid and very defined, not boomy at all. Thank you so much. Regards, C. R.

$85.00

In Stock

12AX7 MullardMATCHED PAIR

New Old Stock in whiteboxes. Late 1960s vintage, Genuine Mullard "B" factory code (Blackburn) made in Great Britain, labeled for IEC Mullard, Amperex, Philips, GE, Fisher and other brands of amplifiers or organs. Same OEM label Mullard tubes as above, only these have been carefully matched into pairs. These have that sweet Mullard sound at a lower price! Very closely matched and selected pair of beauties!

$185.00 per pair

In Stock

Mullard 7025/12AX7 Premium industrial grade

New Old Stock in white boxes, OEM label made in Great Britain. Low noise version of the 12AX7. The 7025 is not commonly found in a Mullard, and these all are Blackburn, U.K. factory date coded genuine Mullard tubes from the 1960s. Getting VERY scarce! Some are Mullard shield logo or made for Philips, or OEM label for amps. Low noise, better than the standard 12AX7 Mullard, try one! ONE EARLY LONGPLATE IN STOCK, $150.00.

$99.00

In Stock

Groove Tubes Mullard Reissue 5751M / 12AX7 Premium industrial grade

New Stock in original boxes, faithful copies of the rare British classics, made in the Slovak Republic. UPDATE: This fine tube has been recently discontinued in spite of soaring demand. We are one of the VERY FEW dealers that have any stock of these great tubes!! These sound like the classic Groove Tubes 12AX7M Mullard reissue, long since discontinued. The 5751 has about 28% less gain than the 12AX7 and will work great in the V1 slot of your guitar amp, or phono stage, or any hi-fi application. Rich sonics of the expensive and scarce Mullard originals! Get them now, these are while they last!

$38.00

In Stock

12AX7 Brimar

New Old Stock in white boxes. 1960s vintage, made in Great Britain. This tube is like the famed CV4004 military version, and has the grey standard size plates. These are Brimar with the Brimar factory code, in a very tightly matched pair. These have that sweet British sound, and you are getting a real British Brimar at a savings! RARE SINGLES ARE $95.00 EACH.

$190.00 per pair

Temporarily Out of Stock

12AX7A / CV4004 Mullard or Brimar boxplate military type

New Old Stock in original boxes. late 60s to early 70s vintage, made in Great Britain. This tube is the famed CV4004 military version, and has the grey rectangular box plates. These are Brimar or Mullard with the factory code, in a very tightly matched pair. These have that sweet British sound, and you are getting a real British military boxplate at a savings! RARE SINGLES ARE $110.00 EACH.

$220.00 per pair

out of stock

12AX7 / CV492 military label British Brimar LONGPLATE, old logo, 1950s Footscray, UK factory.

New Old Stock in white box. Early vintage with longplates, large halo top getter, and the early Brimar label on the glass. These are a rare military version and are rapidly disappearing from circulation.

$149.00

In Stock

Tube

AMPEREX / PHILIPS

Amperex logo

Price Each

Quantity in Stock

12AX7 Amperex MEDICAL GRADE, original Holland made.

New Old Stock White Box. 12AX7 Holland made tubes (same factory as the Bugleboy) produced and screened for critical use in medical equipment. These are labelled "Electronics for Medicine" and have the snake logo of the medical profession. In audio use they are very quiet, dynamic, and very engaging to listen to. Medical grade tubes are very rare, especially those made by Amperex. MATCHED PAIRS ARE $425.00.

$199.00

out of stock

12AX7 Amperex Bugleboy type, long narrow plates, foil-strip D-getter, 1950s codes. MATCHED PAIR

New Old Stock, made in Holland, in whitebox. Very rare 1950s date coded BugleBoy type tubes made in Holland. These are the early Holland types, long plate version with the rare foil strip D-getter. These tubes have nearly vanished from circulation, and a matched pair of these are usually not available anywhere in the world. The sweet sounding essence of the Bugle Boy type, these NOS gems have closely matched triodes internally and fair to good labels. Both Bugle Boy and the earlier white "Amperex" label are available. Both tubes have 1950s date codes and a Gm match to within two percent. SINGLE TUBES ARE $190.00 EACH.

$399.00 per pair

In Stock

12AX7 Amperex orange globe logo

New Old Stock in original box, made in Holland. A great vintage Dutch tube still at a decent price, 1970s vintage. SAVE!

$69.00

In Stock

12AX7 / ECC83 various labels by Philips and Amperex Holland, 1959-1962 Heerlen Holland code, large HALO getter

New Old Stock in white box, made in Holland. A nice tube that is identical to the Bugleboy tubes listed above, and were made in the same factory. These all have Heerlen, Holland early date codes, 4 seams in the top glass, large O top getter rings, and most with the old style white label. Expect these to vanish quickly as they are perfect replacements for the now-scarce Bugleboy tube. These were industrial stock and some were made for many different brands of amplifiers, with various labels, but many are Philips Miniwatt. The early large halo getter 12AX7 is a really fine and sweet NOS Dutch tube. MATCHED PAIRS ARE $220.00 PER PAIR.

$99.00

In Stock

12AX7 Amperex Bugleboy, Holland made, MATCHED PAIR.

New Old Stock, made in Holland, in whitebox, 1960s date coded. These are rare, and I don't often have many in stock. Labels are good to excellent on this batch. This is a sweet sounding, long lived tube, and it is rare to find really nice matched pairs like these.

$220.00 per pair

in stock

12AX7 Amperex Bugleboy.

New Old Stock, made in Holland, in original box and whitebox. These are rare, and I don't often have many in stock. Labels are fair to good on this batch. This is a sweet sounding, long lived tube.

$110.00

in stock

12AX7 Amperex/Philips Holland made for Philips, Miniwatt/Dario and other brands.

New Old Stock in whitebox and original box. These are identical to the Bugleboy types, made in the same Holland factory at the same time. These were intended for sale in Europe, and many carry the Dario/Miniwatt label that was used by Dutch Philips (Amperex)for European distribution. Some are also labelled Philips, R/T, RCA, Eico, Hammond, and other brands. Late 1960s Heerlen, Holland (Bugleboy factory) date codes on all. This is a sweet sounding, long lived tube.MATCHED PAIRS, IF AVAILABLE, JUST $179.00!

$79.00

In Stock

12AX7 Adzam made by Philips, Holland made, MATCHED PAIR.

New Old Stock, made in Holland, in whitebox. This rare and fine tube was made in the same Heerlen, Holland factory as the famous Bugle Boy tube, and some say these sound better. 1960s vintage date coded, white label, Adzam tubes are very scarce in the USA. This is a sweet sounding, long lived tube, and it is rare to find really nice matched pairs like these.

$190.00 per pair

In Stock

12AX7 / ECC83 Philips Miniwatt dimple disc getter MATCHED PAIR

New Old Stock in white box, made in Holland. 1972 date codes, Philips or R/T labels, halo getter. These sweet and musical halo tubes were produced in the Heerlen, Holland factory, where the original Bugle Boy tubes were made, and are identical to them. Very hard to find in the USA, especially in matched pairs!

$160.00 PER PAIR

in stock

Amperex 7025/12AX7 Premium industrial grade, Holland made

New Old Stock in white boxes. Holland made orange logo tubes. Low noise version of the 12AX7. The 7025 is not commonly found in an Amperex, and finding ones NOS in original box is VERY rare. These are fine Dutch tubes, with super low noise and sweet sonics, from the 1960s.

$115.00

In Stock

Tube

SIEMENS / SIEMENS UND HALSKE / VALVO

Siemens logo

Price Each

Quantity in Stock

Siemens Germany made 12AX7 / ECC83 LONGPLATE, Siemens-Halske factory date codes, VERY RARE. MATCHED PAIR

New Old Stock in industrial supply boxes, some labeled for Haltron or Sonotron. This is a very low noise, seldom seen longplate Siemens 12AX7, made with the old-style Siemens German precision. These have the ultra wide bandwidth of the Telefunken ECC803S, with nearly identical sonics, which are refined, smooth and accurate. All have the early Siemens-Halske factory mark, and all feature long narrow ribbed plates and small halo getters. Compare the price to the more expensive and equally rare Telefunken! Longplate Siemens tubes are actually rarer than the Telefunken ECC803S and sound better, I believe. SINGLES ARE $150.00 EACH. Carefully matched, a very rare chance to grab a matched pair of these superb vintage tubes.

$350.00 per pair

out of stock

Siemens made E83CC, Ultra-low noise premium 12AX7, standard pins. EXTREMELY RARE.

New Old Stock in original box. This is a very low noise, seldom seen special quality triple mica 12AX7, made with the old-style Siemens German precision. These have the ultra wide bandwidth of the Telefunken ECC803S. Compare the price to the more expensive and equally rare Telefunken, which sells for up to $500.00 EACH on auction sites and some websites! MATCHED PAIRS ARE $325.00 PER PAIR! These tubes are currently soaring in value as stocks of them vanish.

$175.00

in stock

12AX7 Siemens rare longplate, Siemens or OEM labelled, Germany.

New Old Stock in white box. Early 1960s vintage. Siemens tubes are somewhat scarce. They have the German craftmanship and a sound similar to Telefunken. These are the very rare longplate version that was only produced up to 1963. Several with Fisher, Lafayette, or other OEM labels but all have the Siemens factory mark. MATCHED PAIRS ARE $190.00. Excellent quality, grab some while you still can!

$89.00

in stock

12AX7 Siemens, Siemens labelled, GermanyMATCHED PAIRS

New Old Stock in original box. 1960s vintage. Siemens tubes are somewhat scarce. They have the German craftmanship and a sound similar to Telefunken smoothplate, at a cost savings. All have the Munich factory mark. These fine pairs are all matched to within 2 percent. Excellent quality, grab some while you still can!

$200.00 per pair

In Stock

12AX7 Siemens, Siemens or OEM labelled, Germany.

New Old Stock in white box. 1960s vintage. Siemens tubes are somewhat scarce. They have the German craftmanship and a sound similar to Telefunken. All have the Munich factory mark, some have labels for brands like Telefunken, CBS, Dynacord, Valvo, Zenith, etc. Identical tubes to the Siemens label pairs listed above. MATCHED PAIRS ARE $170.00. One rare longplate, $75.00 each. Excellent quality, grab some while you still can!

$79.00

In Stock

Siemens made 5751, Ultra-low noise premium 12AX7, TRIPLE MICA, standard pins. EXTREMELY RARE.

New Old Stock in original box. This is a early 1960s date coded very low noise, seldom seen special quality triple mica 12AX7, made with the old-style Siemens German precision. These have the ultra wide bandwidth of the Telefunken ECC803S. Compare the price to the more expensive and equally rare Telefunken, which sells for up to $800.00 EACH on auction sites and some websites! MATCHED PAIRS ARE $399.00 PER PAIR! These tubes are currently soaring in value as stocks of them vanish.

$199.00

In Stock

12AX7 / ECC83 Valvo, tilted getter

New Old Stock in white box, made in Germany. These have the white Valvo label and the rare tilted top getter, only found in the late 1950s to early 1960s. A very elusive tube to find. They are similar in quality to Telefunken.

$99.00

1 single

12AX7 / ECC83 Rare Longplate Valvo, tilted square getter, 1950s vintage

New Old Stock in white box, made in Germany. These have the white Valvo or Amperex label found in the 1950s, and 1956 date codes. A very elusive tube to find, especially these very scarce tilted square top getter, longplate versions. They are similar in quality to Telefunken, and all have the Valvo Hamburg, Germany factory mark. MATCHED PAIRS ARE JUST $260.00 PER PAIR!

$130.00

2 pairs, 1 single

Tube

OTHER EUROPEAN BRANDS

Price Each

Quantity in Stock

CV492 / 12AX7 Lorentz / ITT labelled, military stock, GermanyMATCHED PAIRS

New Old Stock in original box. Lorentz tubes are somewhat scarce. They have the German craftmanship and a sound similar to Telefunken smoothplate, at a cost savings. All are military CV stock with mil specs. These fine pairs are all matched to within 2 percent. Excellent quality, grab some while you still can! SINGLE TUBES ARE $90.00 EACH!

$180.00 per pair

1 pair

12AX7 / ECC83 Fivre or Neotron longplate, D getter

New Old Stock in white box and original box. These have the gray Fivre label or Neotron and the rare longplates with D top getter, only found in the late 1950s to early 1960s. A very elusive tube to find. They are similar in quality to Telefunken.

$150.00

2

12AX7 Tesla or Tungsram

New Old Stock in white box. A nice European tube from the early 1970s at a great price! These sound nice in hi-fi systems as well as guitar amps and studio equipment. These are Tungsram and OEM labeled. MATCHED PAIRS ARE $99.00!

$49.00

4

Early prewar Ei Yugoslavia made 12AX7A, made for RCA and other brands, MATCHED PAIRS

New Old Stock in white boxes. Wonderful in musical instrument amps. Ei Yugoslavia bought all of the old Telefunken stock and equipment in the 1970s, and produced these tubes, that sound very close to original! These were about the best to come out of Eastern Europe in the late 1970s, they even flash orange when energized like the vintage Europe tubes do. Nicely matched pairs. Some are other labels, some are blank organ repair stock, but are Ei made tubes with the Yugoslavia factory date codes on the glass. SINGLE TUBES, WHEN AVAILABLE, ARE $35.00 EACH.

$70.00 per pair

In Stock

12AX7WA RSD goldpin

New Old Stock in original box. A nice European tube from the early 1970s at a great price! These sound nice in hi-fi systems as well as guitar amps and studio equipment. MATCHED PAIRS ARE $99.00!

$49.00

3

JJ ECC803S, GOLD PIN, Ultra-low noise premium 12AX7.

New Old Stock in original box and white box. These are Slovak made 12AX7 tubes, with superior low noise performance long plates, GOLD PINS, extra side plate supports and a spiral wound filament. This adds up to this tube being one of the most quiet 12AX7 tubes currently being made. This is a decent current production tube, much smoother sounding than most. We have them value priced for each hand matched pair, perfect if your budget does not cover NOS tubes but you want a decent sounding 12AX7!. Hurry, they won't last long!

$79.00 per pair

In Stock

JJ ECC803S, Ultra-low noise premium 12AX7.

New Old Stock in original box and white box. These are Slovak made 12AX7 tubes, with extra side plate supports and a spiral wound filament. This adds up to this tube being one of the most quiet 12AX7 tubes currently being made. This is a decent current production tube, much smoother sounding than most. We have them value priced for each hand matched pair, perfect if your budget does not cover NOS tubes but you want a decent sounding 12AX7!. Hurry, they won't last long!

$45.00 per pair

In Stock

12AD7, Ultra-low noise premium type 12AX7.

New Old Stock in white box. These are Mullard Japan made for NEC. These rare tubes were made for recording equipment where low noise is critical. This adds up to this tube being one of the most quiet 12AX7 tubes ever made. This is a great Mullard Japan made tube, much smoother sounding than most current tubes. Out of production since the 1970s, there are very difficult to find anywhere, but worth the search! This small batch we have was screened for audio use in NEC, Aiwa, and Roberts recording equipment. MATCHED PAIRS ARE $180.00. Hurry, they won't last long!

$80.00

In Stock

12AX7 / 7025 Japanese made.

New Old Stock in original and whiteboxes. Nice tube, similar to Mullard in construction. Many different brands, most made at the Matshushita factory, which was set up by Mullard U.K. Some late 1970s types also. All better than the junk being made today, at a lower price!

$15.00

In Stock

12AX7 / 7025 assorted Chinese, East European, and Russian made.

New Old Stock in original and whiteboxes. Perfect for experimenting or spares! These are fully tested and carry our 30 day standard warranty. No picking of brands at this price.

$6.99

In Stock

Tube

RCA

RCA logo

Price Each

Quantity in Stock

12AX7 RCA blackplate, special selection MATCHED PAIRS

New Old Stock in original and white boxes. The best of the best in vintage USA tubes, a true classic hi-fi tube from the early 1950s. ALSO SEE OUR 5751 BLACKPLATES, BELOW! Fair to good labels on some, some have fair original JAN military boxes, all have close internal and external Gm matching. Nothing like these are likely to ever be made again. These beauties rival the vintage European 12AX7s, with warm midrange and nice air at the top end. Nice old D-getter tubes, carefully matched on a Hickok 539. These tubes are getting very scarce.

160.00 per pair

In Stock

12AX7 RCA blackplate

New Old Stock in whiteboxes and original boxes, some labels are smeared but these are the genuine D-getter 1950s vintage blackplates. Nothing like these are likely to ever be made again. These beauties rival the vintage European 12AX7s, and are the best bang for the buck going in a vintage USA made 'AX7! Some labeled for Westinghouse but are RCA made.

$80.00

In Stock

12AX7 early 1950s RCA made longplate greyplate (all longplate types), white or orange label, some low noise screened for Wurlitzer, Baldwin, Lowrey, and other organs and amplifiers, other OEM brands.

New Old Stock in whiteboxes. These 1950s era longplates have been screened for low noise use in Wurlitzer and other brands of organs, and to exacting specs for various manufacturers of amplifiers. Some are labelled "Wurlitzer by RCA" in the old white ink label, or Baldwin in yellow ink, various amp brands, and few are unlabelled, some labeled for other brands or hi-fi brands. Some are early Tung Sol label made by RCA. Wonderful in musical instrument amps, and a very quiet tube for your tube hi-fi, works well in both applications. Probably the best 12AX7 RCA made, maybe even better than the famed blackplates. Organ tubes, being made by famous makers and factory-screened, are about the best "secret" bargain in NOS tubes today. Grab some now before the secret is out! A FEW MATCHED PAIRS AT $130 PER PAIR!

$60.00

In Stock

12AX7A RCA greyplate

New Old Stock in original and whiteboxes. Wonderful in musical instrument amps. These tubes are in VERY high demand, so stock up NOW! The one, the only.....this is THE tube to have in the V1 slot on any guitar amp, it has that 1960s sound, excellent breakup, and a smoothness than must be heard to be believed! Fair to good labels on all, most of this stock was made for Wurlitzer organs, the classic USA 12AX7 that rivals the Euros!Matched pairs just $130.00!

$65.00

In Stock

7025/12AX7A/6681 greyplate, Premium industrial grade, RCA.

New Old Stock white box. Excellent low noise version of the 12AX7, intended for critical industrial and professional applications. Made just like the 12AX7A greyplates, but have the bonus of the spiral filament for low noise. This is what is usually called for in Fender amps. Among the best ever of the greyplates, for $5 more than the standard 12AX7A, the choice is obvious. A few are 1963 dated, made for Silvertone. Two are 6681 industrial types in original box. MATCHED PAIRS ARE $150.00!

$70.00

In Stock

SPECIAL: "BUTT UGLY" 12AX7 / 12AX7A RCA greyplate tubes!

New Old Stock? Almost New Old Stock? in whiteboxes. Save BIG on these genuine RCA tubes that are, well....BUTT UGLY! Most are missing labels, some are labelled with oddball brands or mixed construction/types, some have crooked glass or tilted insides. This is an accumulation of less-than-pretty RCA tubes that I did not know what to do with. Some were pulls from surplus equipment and test like NOS. All are RCA made, and will sound the same as the pretty RCA tubes, and they are half the price. Don't sit on your butt, get some ugly tubes before they are gone!!Matched pairs just $70.00!

$29.00

in stock

7025/12AX7 Premium industrial grade, RCA or RCA made other label blackplate, or JAN RCA military types.

New Old Stock in original box. Excellent low noise version of the 12AX7. Both the JAN military 7025 and the blackplate 7025 are seldom found, and well worth the search! Some made for Webcor, RCA factory marked.

$90.00

2 single

7025/12AX7 1950s long greyplate, Premium industrial grade, RCA or Wurlitzer by RCA.

New Old Stock in original boxes and white box. Excellent low noise version of the 12AX7. These are the early type long greyplates, some made for organs. Among the best ever of the greyplates. See also Tung Sol long grey plate 7025 below.

$80.00

in stock

RCA 5751 blackplate TRIPLE MICA, old white label, square getter, extra support rods, Premium industrial grade 12AX7 MATCHED PAIRS

New Old Stock in white box. These are old and fine 1950s vintage blackplates, quality on par with the blackplate RCA 12AX7 tubes, and are excellent, sweet sounding subs for the hard-to-find 12AX7. 3 mica spacers with extra side support rods, and the distinctive square getter all add up to vintage quality that will never be made again. Carefully hand matched pairs of these gems. Some have the Beckman label but are RCA made. TUBES, WHEN AVAILABLE, ARE $60.00 EACH.

$130.00 per pair

In Stock

RCA 5751 blackplate Premium industrial grade 12AX7

New Old Stock in white box, thick mica spacers. The best bargain going in a genuine NOS 5751, the RCA blackplates set the standard for all the other brands. Some have the Beckman label but are RCA made. MATCHED PAIRS ARE $110.00.

$50.00

In Stock

RCA 5751 blackplate 5751WA Command Series Premium broadcast grade 12AX7

New Old Stock in white box. Among the finest 5751 tubes ever made. Orange COMMAND label or military orange JRC5751 label, old logo, 1960s vintage, some with the 5751WA military markings. This type is like the early 1960s JRC 5751WA military RCA made type. RARE, not often in stock. Matched pairs, when available, $190.00 per pair.

$94.00

in stock

Tube

GENERAL ELECTRIC

GE logo

Price Each

Quantity in Stock

12AX7 blackplate GE longplate tubes, large D-getter RARE

New Old Stock in white boxes. This is the early version of the GE classic longplate, with blackplates that look almost like pewter, made during the mid 1950s. An excellent choice balancing price with the superior sonics of a vintage USA tube!

$79.00

1 single tube

12AX7 early 1950s GE made longplate greyplate (all longplate types), white or orange label, low noise screened for Wurlitzer, Baldwin, and other organs and amplifiers, other OEM brands. NEW LOWER PRICE!

New Old Stock in whiteboxes. These 1950s era longplates have been screened for low noise use in Wurlitzer and other brands of organs, and to exacting specs for various manufacturers of amplifiers. Some are labelled with various amp brands, and few are unlabelled, some labeled for other brands or hi-fi brands. Wonderful in musical instrument amps, and a very quiet tube for your tube hi-fi. Probably the best 12AX7 GE made, maybe even better than the famed blackplates. Organ tubes, being made by famous makers and factory-screened, are about the best "secret" bargain in NOS tubes today. Grab some now before the secret is out!

$35.00

in stock

6681/12AX7 early longplate industrial GE OR Sylvania greyplate

New Old Stock in white box. This is a very fine industrial 12AX7 type, with the rare early longplates. Can withstand many on off cycles, and filament voltage variations, without any loss in output. Originally made for mobile communications equipment, they are super sweet tubes in guitar amps and hifi units!

$45.00

In Stock

12AX7 GE longplate tubes

New Old Stock in original and whiteboxes. This is the early version of the GE classic, with the longer grey plates, made during the late 1950s, early 1960s. Most have the early GE label in white on the glass. MATCHED PAIRS ARE $100.00

$45.00

In Stock

12AX7 GE tubes

New Old Stock in original and whiteboxes, short grey plates. A few made for RCA.

$30.00

In Stock

JG 12AX7 or 12AX7WA GE military spec tubes

New Old Stock in original and whiteboxes

$40.00

1 tube

7025/12AX7 Premium industrial grade, Magnavox, CBS, or GE, plus other vintage USA made brands.

New Old Stock in original boxes and whitebox. Low noise version of the 12AX7. These are an excellent step up from the 12AX7, and are suddenly a "hot" tube , making them scarce. Get them now or miss out! Some are labeled for Fender or Amperex but are GE 1960s made.

$30.00

Sylvania made only in stock

GE JG5751/WA military or 5-star type, 5751 blackplate triple mica, Premium military grade 12AX7.MATCHED PAIR

New Old Stock in white box. Gm matched within 5 percent. These are low microphonic TRIPLE MICA blackplates. These rare 1950s vintage tubes have the extra mica wafer at the top of the plate structure, making the tube extra rugged and virtually eliminating any traces of microphonics. Very hard to find these today, especially in a closely matched pair! Some are made for Sun. SINGLE TUBES ARE $60.00 EACH.

$130.00 per pair

In Stock

5751 greyplate triple mica Premium industrial grade 12AX7, GE 5-star broadcast or JG5751 military, Raytheon, or CBS made by GE

New Old Stock in original box and whitebox. Lowest price NOS triple mica 5751 tubes ANYWHERE! MATCHED PAIRS ARE $80.00!

$40.00

In Stock

5751 Premium industrial grade 12AX7, JAN military grade GE and 5-Star GE

New Old Stock in original boxes, greyplates. Early 1970s production, will outlast and outperform any of the current production crap! These are Joint Army-Navy tubes, USA made, and are a BARGAIN right now. Stock up!

$30.00

In Stock

Tube

SYLVANIA

Sylvania logo

Price Each

Quantity in Stock

12AX7 Sylvania blackplate

New Old Stock in whiteboxes, some labels are smeared but these are the genuine D-getter 1950s vintage blackplates. These resemble the JAN military Sylvania blackplates, and sound as good if not better. These are very hard to find, get 'em while you can! MATCHED PAIRS, WHEN AVAILABLE, ARE $120.00 PER PAIR.

$60.00

In Stock

12AX7 GE, and Sylvania special select organ (low noise) tubes, 1950s & 1960s vintage.

New Old Stock in whiteboxes, specially made and selected for Baldwin, Lowrey, Conn, and Wurlitzer organs. A few are for Motorola instruments, some are blank industrial stock tubes. These "audio screened" selected organ tubes are the best-kept secret in the 12AX7 world. Matched pairs just $50.00! Try some now before the secret is out and the price skyrockets!

$29.00

In Stock

JHS 12AX7 (12AX7WA) or JRP 12AX7 JAN Sylvania, JAN Ken Rad, or JAN Raytheon military blackplate, 1953-1955 vintage D-getter, MATCHED PAIRS

New Old Stock in original military boxes. Excellent 1950s tubes, with the shiny black plates, pewter color in the case of the Ken Rad. These are fine American D-getter blackplates from the golden age of tube manufacture. As good as the best USA blackplates, and rival any vintage European 12AX7. Beautiful, closely matched pairs (within 5% Gm), vintage blackplate Sylvania, Ken Rad or Raytheon military quality! SINGLE TUBES, WHEN AVAILABLE, JUST $60.00 EACH!

$120.00 per pair

In Stock

JHS12AX7A, 12AX7WA and 6681 JAN Sylvania

New Old Stock in original military boxes. Rugged military Sylvania tubes that sound great! The WA type is military and the 6681 type is industrial. A nice vintage 12AX7 that is still a bargain!

$30.00

In Stock

12AX7 Sylvania

New Old Stock in original and whiteboxes. A nice vintage 12AX7 that is still a bargain! Client comments: "Brent,    Just a note to say the NOS Sylvania 12AX7's sound great in my older Fender guitar amps. What a buy! While I could not afford the more expensive tubes you offer, these were only a few dollars more than your typical new tubes manufactured today and they sound way better to my ears. My amps are now very quiet and have more detail and a "sweetness" they did not have before. I've tried JJ's, the new Tung-Sol's, Electro-Harmonix, Groove Tubes and even the older Fender branded 7025's. None of those sound as good as these. At $30.00 each, they are a good buy for us who own older tube guitar amplifiers. Thanks again, G.C."

$30.00

In Stock

7025/12AX7 Premium industrial grade, Sylvania, Magnavox, CBS, or GE, plus other vintage USA made brands.

New Old Stock in original boxes and whitebox. Low noise version of the 12AX7. These are an excellent step up from the 12AX7, and are suddenly a "hot" tube , making them scarce. Many labeled for Burroughs for critical industrial use. Get them now or miss out!

$30.00

In Stock

Sylvania blackplate TRIPLE MICA Gold Labelled, Gold Brand or military 5751, Premium 12AX7

New Old Stock in white box. Blackplate 3-mica version of this rare and excellent tube, all from the same military bulk tray. Fine, early military type tubes with gold lettering (often faded) on the glass. Among the best 5751 types ever made and, lately, huge audiophile demand is making these scarce. Try this legendary tube out while you can, as stocks are vanishing! SINGLE TUBES ARE $120.00.

$240.00 per pair

out of stock

Sylvania JHS 5751 Triple Mica blackplate Premium 12AX7

New Old Stock in original box and white box. Fine, early 1960s military tubes with yellow or green lettering on the glass, TRIPLE MICA, identical to the Gold Brand industrial line, but these have standard pins. Awesome tubes that have reached a peak in demand and are getting scarce! One is labeled 12AX7WA Sylania in yellow over the 5751 marking, one made for Westinghouse, but is the same 5751 tube as described. MATCHED PAIRS ARE $160.00 PER PAIR.

$80.00

1 pair in stock

Sylvania Green or gold Labelled JHS 5751, greyplate Premium 12AX7

New Old Stock in original box. Fine, early 1960s military tubes with green lettering on the glass. These sound like the triple mica versions and you pocket the savings! A few have been re-labeled ECG. MATCHED PAIRS ARE $110.00 PER PAIR WHEN AVAILABLE.

50.00

In Stock

Tube

OTHER USA BRANDS AND RARE TYPES

Price Each

Quantity in Stock

5751 Tung Sol military or industrial type long greyplate, D or horseshoe getter, Premium industrial grade 12AX7.

New Old Stock in white box. Tung Sol, with the old white labels from the 1950s, identical to the rare RCA made long grey plate 7025! Rich and smooth tone with quiet background. Matched pairs, when available, are $190.00

$90.00

In Stock

7025 Tung Sol military type long greyplate, Premium industrial grade 12AX7.

New Old Stock in original box. Tung Sol D getters, with the old white labels from the 1950s, identical to the rare RCA made long grey plate 7025! Rich and smooth tone with quiet background. Matched pairs, when available, are $190.00

$90.00

2

5751 type Tung Sol long greyplate or 12AX7 blackplate, Premium industrial grade 12AX7.

New Old Stock in original box. Tung Sol, with the old white labels or OEM labels from the 1950s, identical to the Command series listed below, at a savings! Matched pairs, when available, are $160.00

$80.00

In Stock

5751 Raytheon blackplate windmill getter, Premium industrial grade 12AX7.

New Old Stock in original box. Sweet and smooth 1960s Raytheon 5751 tubes with the rare four bladed windmill shape top getter. Rich and smooth tone with quiet background. Some say these are the best 5751 ever made.Matched pairs, when available, are $250.00

$125.00

In Stock

6681 / 12AX7 Tung Sol early longplates greyplates, Tung Sol made industrial. MATCHED PAIR

New Old Stock in original box. These are wonderful, old style Tung-Sol tubes with long greyplates, and the old version white label. These rare industrial type 6681 were designed to maintain a uniform output even if the input filament voltage varies. Rock solid and sweet for hi-fi our guitar amp use. These are fast disappearing from the vintage market, so grab some now! A rare matched pair. A FEW SINGLE TUBES AVAILABLE AT $80.00 EACH.

$160.00 per pair

1 pair

12AX7 Raytheon blackplate organ tubes, SPECIAL PRICE

New Old Stock in whiteboxes. These are the genuine 1950s vintage Raytheon shiny blackplates. For a short time we have a very limited special LOW PRICE on these rare tubes made for organs, some OEM repair stock with no labels. Nothing like these are likely to ever be made again, and these have the added advantage of being factory screened for use in organ audio circuits. These beauties rival the vintage European 12AX7s, and are the best bang for the buck going in a vintage USA made 'AX7! MATCHED PAIRS ARE JUST $90.00 PER PAIR.

$40.00

In stock

12AX7 Raytheon blackplate

New Old Stock in whiteboxes and original boxes, some labels are smeared but these are the genuine D-getter 1950s vintage Raytheon shiny blackplates. Nothing like these are likely to ever be made again. These beauties rival the vintage European 12AX7s, and are the best bang for the buck going in a vintage USA made 'AX7! MATCHED PAIRS ARE JUST $140.00 PER PAIR.

$60.00

1 pair

12AX7 Raytheon made for Crown amps and recording equipment, side getter

New Old Stock in whiteboxes. Nothing like these are likely to ever be made again. Nice 1960s vintage long greyplate Raytheon made with low noise side getters, all with the Crown label. Very scarce tubes, wonderful sound and very quiet.

$60.00

1

12AX7 JAN Raytheon, Tung Sol BLACKPLATES.

New Old Stock in original box. These are wonderful, old style military (JAN) Raytheon Tung-Sol or Ken Rad tubes similar to RCA with blackplates, top square or "D" getter, and the old version orange or white label. These are fast disappearing from the vintage market, so grab some now! MATCHED PAIRS ARE JUST $140.00!

$70.00

4 Tung Sol

12AX7 Tung Sol early longplates (some made by RCA) greyplates, bulk pack stock. MATCHED PAIR

New Old Stock in whiteboxes or original box. These are wonderful, old style Tung-Sol tubes made by RCA with long greyplates, top "D" getter, and the old version white label (a few made for National with red label). These are fast disappearing from the vintage market, so grab some now! A rare matched pair. A FEW SINGLE TUBES AVAILABLE AT $60.00 EACH.

$130.00 per pair

In Stock

12DF7 / 12AX7 Premium industrial grade, square top getter, made for lab use.

New Old Stock in original boxes. Low noise industrial version of the 12AX7, made by Westinghouse. These were made by Westinghouse in the late 1950s and have the square top getter typical of that period, and then screened for precision laboratory use. This is a nice, but very scarce, version of the 12AX7 that has super low noise and microphonics ratings. Perfect for tube microphone preamplifiers, and the ultimate hi-fi 12AX7. MATCHED PAIRS ARE $150.00 PER PAIR

$69.00

Out of Stock

12AX7/A other USA made brands (Motorola, Zenith, Philco, Westinghouse, Webcor, etc.)

New Old Stock in original and whiteboxes. Too many brands to list. ALL are pre-1970 vintage and ALL will outperform the garbage being made today.

$29.00

6

CBS 7729 / 12AX7 Premium industrial grade, made for lab use.

New Old Stock in original boxes. Low noise industrial version of the 12AX7, with gold plated pins. These were made by CBS and then screened for precision laboratory use and sometimes sold under the Leeds & Northrop label, with their lab grade number on the tube and box. This is a nice, but very scarce, version of the 12AX7 only made by CBS. Perfect for tube microphone preamplifiers.

$150.00

2

Groove Tubes 7025/12AX7/ECC83 Premium industrial grade

New production tubes in original boxes. Low noise version of the 12AX7. A modern version of the old Smoothplate Telefunken. Factory screened for noise, hum, and microphonics. One of the best buys in the entire 7025, 12AX7, or 5751 categories! MATCHED PAIRS JUST $59.00!

$28.00

1

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