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BRENT JESSEE RECORDING & SUPPLY, INC.

1566 West Algonquin Road #111

Hoffman Estates, IL 60192

Phone 847-496-4546

6SN7 TUBES CURRENTLY IN STOCK


This page lists all of the 6SN7 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. 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.

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An Important Note About NOS Tubes. Please Read.

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The 6SN7 tube is a medium-mu twin triode in an octal based package, usually glass, although some metal envelope types were made. In normal use it operates as a class A amplifier. It was widely used in the early days of television as the vertical amplifier, and it's use was so common in most TV chassis designs that vintage 6SN7 tubes are still fairly easy to find today. Audio designers soon found it made a great audio preamp with it's large plates, ample power reserve, and low microphonic octal package. The GTA and GTB types, having been fine tuned for demands in television chassis vertical sweep circuits, can handle up to 7 watts maximum plate power!

The demands for these tubes today are primarily in vintage and recent design audio amplifiers and preamplifiers of the high-fidelity type, up to and including the most expensive and esoteric. It seems there is a 6SN7 tube for every taste and budget, and some of the vintage versions are being hunted to extinction, especially those made for the military. I will try to explain the differences between some of these tubes, and list specifically what I have in stock. I expect some of these tubes will skyrocket in price worldwide as more and more audio designers find out that this preamp tube is a design that really can't be improved upon....and that the fine vintage tubes just cannot (and probably will not) ever be duplicated by a current production tube.

Three envelope sizes are common in the full octal base version: SHORT, glass is 1.5 inches high; MEDIUM, glass is 1 3/4 inches high; TALL or "TALL BOY", glass is 2 inches high.

6SN7GT / G:

This is the original version of this tube. It may be found in all three sizes of glass envelope. The Sylvania Tall Boy types have two triangular shaped plates facing each other mounted high in the tube, with either a top or bottom getter. Later GT versions were in a medium glass envelope with a green label and blackplates with bottom getter, sometimes called the "Bad Boy" 6SN7, and are sought after for their excellent sonics. The Bad Boy tubes are virtually identical to the military VT-231 from the early 1950s and are currently a less expensive alternative, but this could change as the Bad Boy fad catches on! The early Sylvania GTA and GTB types had a top getter and silver flashed the entire top of the tube, sometimes called "chrome tops" or "chrome domes". Many brands used this design, but the high mounted triangular plates means it most likely was made by Sylvania. An unusual twist on this design is the "Mouse Ear" Tung Sol 6SN7GT. This medium glass envelope tube has the high mounted triangular plates like the Sylvania, but also includes two large round clear mica supports at the top edge of each plate, parallel to the glass sides, looking a bit like Mickey Mouse Ears. These Mouse Ear Tung Sol tubes sound very nice and are worth seeking out. The early RCA "GT" types were usually in either a medium or short envelope and have a grey RF shield sprayed on inside the glass. The GE and KenRad types were similar, but the inner glass coating is deep black. These tubes usually have flat black plates, like large 12AX7 blackplates. The military versions of these are the VT-231 and are in very high demand today. Two rare early types worth grabbing at any price are the nickel base Sylvania 1940s vintage, and the early Tung Sol 1940s types with the black oval shaped plates, often found in blackglass. Both are very scarce and in high demand, which has depleted new old stocks. These have excellent sonics are are worth the extra price, if you find one.

6SN7GTA / GTB:

This is the later improved version, and the improvements were primarily geared toward the TV chassis designers who demanded more max. plate wattage and voltage, where vertical circuits can put up to 1500 volt pulses at 7 watts on the plates. For hi-fi audio use, these improvements are meaningless. These are fine tubes, nonetheless. Most are found in the short glass envelope, but some brands like Raytheon used the Tall Boy style. Sylvania made tubes have the triangular plates mounted lower, and set at angles to each other, although some of the very earliest examples of the GTA types still used the dull blackplates facing each other. RCA used the flat black plates "sideways" to each other, and GE used the grey plates parallel to each other. The Sylvania types in demand have a large top getter patch. The earliest Sylvania GTA types have a green label and heavy top getter flashing extending down the sides of the tube. The early GTB types are similar, but most have a yellow or red label, with some rare first production run tubes still out there with the 1940s green label. Watch for these tubes, made by Sylvania for other brands like Zenith, Philco, and Motorola. They are currently bargain priced and are the same fine tube as those with the Sylvania label! The versions from the 1960s have the getter just covering the top of the tube. All of these have the same black triangular plates and are excellent tubes. The GE types have a side getter and large parallel grey plates, and the RCA used both bottom or side getter. Some side and bottom getter types have 2 getter patches on top, right above the plates. This often happened during the factory gettering process with 6SN7 types that did not have top getters. It is not a sign of use, as the spots are usually bright silver and visible on tubes still sealed in the box. Most other vintage USA brands you find will have been made by these three vendors, and will be one of the above variations, regardless of brand on the label. A few were made with brown micanol bases, the RCA types being very dark brown, the GE types being a lighter, marbled brown. The brown micanol bases are most often found in military tubes, as they resist heat, moisture, and fungus/mildew growth. It was not uncommon, however, for manufacturers to repackage unsold military surplus tubes in "civilian" boxes and sell them to the general public. Many audiophiles prefer either the Sylvania chrome tops, the RCA, or the GE side getter over any others, even over the military or redbase types. These are all a great bargain now, and are sure to be rare and expensive tomorrow.

6SN7W / WGT / WGTA:

This type indicates a military spec tube that was not made for consumer use. These usually have extra support posts on the plate structure, heavy mica spacers, and brown micanol bases. These also have the famous triangular shaped black plates. They have been ruggedized to withstand shock, the brown low loss micanol base resists mold, mildew, and fungus growth, and they can withstand heat even if used upside down. The early Sylvania 6SN7W types from the 1940s had a metal collar around the base, then later a black base. These look internally alot like the early Sylvania GTA types listed above. Sylvania made these for other brands as well, including RCA. Easy to spot as they have the triangular blackplates facing each other in a short bottle, with a very heavy chrome top flashing extending down the sides of the tube. These are RARE and worth seeking out! The WGT and WGTA types all had brown bases. Only the WGTA types made in the late 70s and 80s reverted back to black bases then coin or wafer bases. These are all wonderful tubes, are long lived, and sound fantastic. No wonder they are fast disappearing from the vintage market.

ECC32 and ECC33:

A fine European version of the 6SN7GT. These don't often turn up in the USA. The few I have seen have been British and manufactured by Mullard or Brimar. This tube is usually medium glass, large, sometimes fat, full octal base, and some have a dark grey inner glass coating which hides the plates from view. I believe nearly all ECC32 tubes are cylindrical or oval plates. These are very rare, and worth seeking out. The early 1950s oval plates with brands like Cossor, Marconi, Osram, Mullard and Brimar are awesome. They are noted for their excellent sonics in audio use. Some may be labeled with either ECC32, ECC33, 6SN7GT, or a combination of these. Some have the BVA label, and the older versions often have the date and factory codes on the bottom of the base between the pins. Be careful when buying these! Later versions were made in Russia, but still say "Great Britain" on them! The Russian tubes have a rounded glass top, and a cup or square shape solid getter. They also often have a large, very shiny black base NOT made from bakelite but from an inferior plastic. We do not carry these types in our stock.

CV1988:

Another fine military version of the 6SN7GT, this time from Western Europe. These don't often turn up in the USA. The few I have seen have been British and manufactured by Mullard. This tube is usually medium glass, dark brown full octal base, and has a dark grey inner glass coating which hides the plates from view. I suspect these are cylindrical plates, as most of the European 6SN7 varieties have been this type. These are rare, and worth seeking out. Not only do they sound as good as the best industrial 5692, but they have the higher specs of a 6SN7GTB with regards to plate current and voltage, and have the long heater life and overall ruggedness of the US military types. A winning combination!

6H8C:

This is a rather difficult to find Russian made tube that is a direct replacement for the 6SN7. This tube can be confusing to buy for the novice, as there are several versions available. The common version has a medium glass envelope and a black plastic base, and are still in production in Russia. They are of fair to medium quality, but certainly are not worth much more than $20.00 each. I have seen these tubes sold for export to the West, labelled as 6SN7GT. THE RARE VERSION, and the one to look for is the Russian military version. This tube has a medium glass envelope, with a nickel collar around the base. It has black T-shaped plates facing each other, with small holes in the sides of the plates. There may be an "OTH" production number inked on the base, and the tube type is etched within a circle on the glass. These military tubes are rare, and are built like the Tung Sol oval plates, with spring mounted spacers at the top touching the inside glass, and heavy support rods for each plate element. These tubes have incredible air and accurate bass, kind of like what a Telefunken would sound like, if Telefunken had ever made a 6SN7! They are amazingly dynamic, and at the same time delicate, and very quiet. These tubes are actually rarer than the fabeled Tung Sol oval plates, and clients have told me these sound better!

5692:

This is the premimum commercial / "industrial" grade of 6SN7. The most famous of these are the RCA "redbase" series, with their distinctive red marbled full octal bases. These are always in the short glass envelope style, and most have four support rods joining the four corners of the top and bottom mica spacers and supporting the plate structure. These have 10,000 hour life filaments and are very resistant to shock and vibration, making them low in microphonics. The RCA versions have the "stop sign" label on the top of the tube with the number 5692 inside, and on the older tubes this was often smeared off, being printed with a chalky white paint. ALL of the redbase versions of this tube were made by RCA, regardless of the brand on the label. TungSol, GE, and Raytheon can often be found branded on the label, but RCA made them all. Other brands like CBS/Hytron and Sylvania made brownbase versions of this tube, but I suspect all were actually made by RCA, as they are identical inside. These are all really fine tubes, but have been hunted nearly to extinction. I usually only have a few in stock, but they are worth the higher cost in overall long life and great sound.

For more information on 6SN7 tubes, see TubeSeller.com at http://www.tubeseller.com/6sn7info.html

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Tube

Description

Price Each

Quantity In Stock

5692 RCA redbase premium industrial 6SN7GT, short glass envelope MATCHED PAIR.

New Old Stock, white box. This is a very good, very rare dual triode. Rugged 5 support posts, 10,000 hr. life, low microphonics. This is the real thing, getting harder to find every day. These are immaculate tubes. These pairs are matched to within 2-3 percent. Some say this is the best 6SN7 type ever made. SINGLE TUBES, WHEN AVAILABLE, ARE $100.00 EACH.

270.00 per pair

0

5692 RCA redbase premium industrial 6SN7GT, short glass envelope MATCHED PAIRS.

New Old Stock, white box. This is a very good, very rare dual triode. Rugged 5 support posts, early blackplate type, 10,000 hr. life, low microphonics. This is the real thing with the famous red full octal bases, getting harder to find every day. Some say this is the best 6SN7 type ever made. Each pair has been carefully hand selected and matched. These were stored for years in a very dusty location and the bases and glass of some are discolored. They test NOS and you pocket the savings!

225.00 per pair

1 pair

5692 RCA redbase premium industrial 6SN7GT, short glass envelope.

New Old Stock, original box and white box. This is a very good, very rare dual triode. Rugged 5 support posts, 10,000 hr. life, low microphonics. This is the real thing, getting harder to find every day. Some say this is the best 6SN7 type ever made.

$99.00

2

5692 RCA redbase premium industrial 6SN7GT, short glass envelope.

Used tested good, white box. This is a very good, very rare dual triode. Rugged 5 support posts, 10,000 hr. life, low microphonics. Try them used with no burn-in needed, lots of life left, and a big savings!

$59.00

1

5692 JAN CBS-Hytron, brownbase military grade 6SN7GT, short glass envelope.MATCHED PAIR

New Old Stock original military box or whitebox. Made by RCA, is nearly identical to the redbase version above, complete with 5 support posts. 1950s and 1960s vintage. Nicely matched pairs of these rare tubes, one of the better investments you can make in a pair of vintage 6SN7 type tubes! Get a real 5692 at a savings over the redbase types!

$140.00 per pair

0

5692 JAN CBS, Westinghouse, Sylvania, Hytron and GE brownbase military grade 6SN7GT, short glass envelope.

New Old Stock white box and original box. Virtually all made by RCA, is nearly identical to the redbase version above, complete with 5 support posts. Get a real 5692 at a savings over the redbase types!

$56.00

0

6SN7GTA / ECC33 Telefunken German made, RARE.

New Old Stock white Box. The ECC33 is the European type for the 6SN7GT. Almost never seen in the USA, the ECC32 is an excellent 6SN7 European type. Telefunken did not manufacture many of these, and they appear to have been made for export, as they have 6SN7GTA on the label. Hear the ECC33 quality audiophiles are talking about! MATCHED PAIRS ARE $325.00 PER PAIR!

$150.00

2

6SN7GT / ECC32 Brimar UK made, oval plates. MATCHED PAIR

New Old Stock white Box. The ECC32 is the European type for the 6SN7GT. These rare early 1950s British gems have the elusive oval plates, and the rich British sonics. A very rare carefully matched pair.

$200.00 per pair

0

6H8C Russian Military 6SN7GT, black "T" plates, nickel base. EXCLUSIVE STOCK, RARE!

New Old Stock White Box. This is the rare military version of the 6H8C, NOT the junky blackbase version selling elsewhere for $25. Worldwide stocks of the military version have virtually vanished from the market. Heavy duty metal bases, T-shape plates, and spring steel plate supports like Tung Sol oval plate construction! These tubes have incredible air, image, "rosin-on-the-bow" realism, and powerful yet accurate bass. Very hot testing tubes with great gain, yet incredibly quiet. Some clients say these are the best 6SN7 tubes they have ever heard. I have a few RARE matched pairs of these, carefully selected and matched to within 1-2 percent. Better grab them now, before these Russian beauties become rarer than Faberge eggs!

$225.00 per pair

0

6SN7GT / ECC33 Fivre France, 1952.

New Old Stock white Box. The ECC33 is the European type for the 6SN7GT. This rare early 1950s French gem has the elusive grey staggered plates, and the rich European sonics. Possibly made for export, as it is marked 6SN7GT. These are very scarce in the USA.

$110.00

1

JAN 6SN7GT TungSol black oval (round) plates, blackglass. MATCHED PAIR

New Old Stock original box and white Box. The current "Holy Grail" of 6SN7 NOS tubes, and fast becoming extinct! Sweet, detailed, musical, 3-dimensional sound, and very quiet, this RARE 1940s tube ranks with very few others as the greatest 6SN7 ever made. Military Blackglass, black round plates, internal plate and mica supports, with the old style Tung Sol logo in silver on black bases, excellent mint-condition NOS tubes. This is only the second time in 10 years I have found MATCHED PAIRS (within 2 percent Gm) of these! Get them now, I may never again find more pairs of these!

call/e-mail

call/e-mail

6SN7GT TungSol black oval (round) plates, blackglass.

New old stock, original Box. Late 1940s, extremely RARE tubes. This tube is very difficult to find but extremely musical and worth the search! Perfect condition blackglass, with the early Tung Sol logo in silver (1 labeled for RCA in silver) on the black base. Sweet and detailed, hear for yourself why this rare tube is considered one of the best.

$199.00

2

6SN7W / 6SN7GT Sylvania Nickel Base, blackplate clearglass, heavy top getter flashing.

New Old Stock white box. This is the the very rare 1940s Sylvania first production of the 6SN7 tube, with the nickel collar base. Black triangular plates facing each other, original type tall boy envelope. Said to be the Sylvania answer to the Tung Sol oval plate, and they sound incredible. Extremely rare. MATCHED PAIRS ARE $325 PER PAIR.

$150 EACH

1 single

6SN7WGT/A brownbase JAN Sylvania Military grade, black triangular plates MATCHED PAIR

New Old Stock Original Box and whitebox. Scarce tubes, hard to keep in stock due to their popularity with audiophiles. These are the famous military JAN tubes, as sweet as the VT-231 types, but with brown bases. Some are military surplus labeled for DuMont or CBS, but are genuine WGTA brownbase tubes. Nicely matched pairs!

$129.00 per pair

8 pairs

6SN7GT/WGT/WGTA brownbase JAN Sylvania, and JAN Raytheon Military grade, black triangular plates

New Old Stock Original Box. Scarce tubes, hard to keep in stock. The JAN Sylvania tubes are the early 1950s versions, with heavy top getter flashing (chrome domes), short bottle, and an extra support rod. The 1950s JAN Raytheon resemble the VT-231 types, but with brown bases. Excellent , clean NOS tubes! MATCHED PAIRS ARE $129.00 PER PAIR. A few are made for other brands but are Sylvania or Raytheon made.

$52.00

14

6SN7WGT brownbase JAN Tung Sol Military grade, black triangular plates MATCHED PAIR

New Old Stock whitebox. Scarce tubes, hard to keep in stock due to their popularity with audiophiles. These are the famous military JAN tubes, as sweet as the VT-231 types, but with brown bases. These are the early 1960s versions, with tall bottles, black tri-plates at angles, and 1960 Tung Sol date codes. Nicely matched pairs! One pair is labeled and boxed for DuMont but is the same military Tung Sol tube. SINGLE TUBES ARE $50.00 EACH.

$109.00 per pair

1 pair, 1 single

6SN7GT - VT-231 JAN Ken Rad, blackplates, greyglass and clearglass, bottom getter, medium glass envelope.MATCHED PAIRS

New Old Stock original box and white box. Very fine sounding, very rare blackplates from the 1940s (many in original military boxes dated Dec. 1944), made for US military. These rival the RCA 5692 redbase or Tung Sol oval plate in quality, and are just as scarce. Full octal blackbase with silver lettering, some clearglass, some with deep black internal coating on the glass. Very rare pairs that don't often turn up. 2 SINGLES WITH BLEMISHED BASES IN STOCK, $60.00 EA.

$145.00 per pair

1 pair

6SN7GT Ken Rad, staggered blackplates, clearglass, medium glass envelope.MATCHED PAIR

New Old Stock white box. Very fine sounding, very rare blackplates from the 1940s, nearly identical to those made for US military. These rival the RCA 5692 redbase in quality, and are just as scarce. When available, single tubes are $50.00 each.

$120.00 per pair

1 pair

6SN7W JAN Sylvania blackplate clearglass, short glass envelope, black base, heavy top getter flashing.MATCHED PAIRS

New Old Stock white box. Very fine sounding, very rare blackplates from the 1940s. These beauties were made for radar equipment, and should function for a very long time. Matched to within three percent Gm on a Hickok TV-10. This is the rare early 1940s version of the military 6SN7 that predates the brownbase series, this version just slightly later than the nickel base version.

$170.00 per pair

1 pair

6SN7W JAN Sylvania blackplate clearglass, black base, heavy top getter flashing.

New Old Stock white box. Very fine sounding, very rare blackplates from the 1940s. This is the rare early 1940s version of the military 6SN7 that predates the brownbase series, this version just slightly later than the nickel base version.

$61.00

0

6SN7WGTA blackbase JAN Sylvania, Military grade, black triangular plates

New Old Stock Original Box. Scarce tubes, hard to keep in stock. These are the 1970s version with black bases, the last of the Golden Era of USA military tubes! Excellent , clean NOS tubes! Matched pairs just $90.00!

$40.00

0

6SN7GT - VT-231 JAN Sylvania, blackplate clearglass, bottom getter, medium glass envelope.MATCHED PAIR

New Old Stock white box. Very fine sounding, very rare blackplates from the 1940s, made for US military. These rival the RCA 5692 redbase in quality, and are just as scarce. Both white and green labels, the construction of these are identical to the "Bad Boy" 1952 type. VERY difficult to find these in pairs! Also have a few singles at $48.00 each.

$150.00 per pair

1 pair

6SN7GT - VT-231 JAN RCA, blackplate greyglass, short glass envelope MATCHED PAIR.

New Old Stock original box & white box. Very fine sounding, very rare blackplates from the 1940s. Deep black internal glass coating, made for US military. These rival the RCA 5692 redbase in quality, and are just as scarce. Carefully matched internally and from tube to tube. SINGLE TUBES, WHEN AVAILABLE, ARE $55.00 EACH.

$135.00 per pair

0

6SN7GT - VT-231 JAN Raytheon, blackplate greyglass or clearglass, short glass envelope. MATCHED PAIRS

New Old Stock original box & white box. Very fine sounding, very rare blackplates from the 1940s. Deep black internal glass coating, some clearglass versions, blackplates (high mounted black "T" plates) with extra support rods, made for US military. Some are early orange or yellow Raytheon labels without military markings but are military stock. These rival the RCA 5692 redbase in quality, and are just as scarce. SINGLE TUBES ARE JUST $50.00 EACH!

$140.00 per pair

2 pairs, 1 single

6SN7GT Raytheon, blackplate clearglass with yellow or orange label, medium glass envelope. MATCHED PAIRS

New Old Stock original box & white box. Very fine sounding, very rare blackplates from the 1940s. These are virtually identical to the JAN Raytheon VT231 orange label tubes above, but you pocket the savings. Most have the extra plate support rods. These rival the RCA 5692 redbase in quality, and are just as scarce. A few are made for Westinghouse. SINGLE TUBES ARE JUST $50.00 EACH!

$100.00 per pair

2 pairs, 2 SINGLES

6SN7GT Amperex Holland made for Philips MATCHED PAIR

New Old Stock original boxes. This rare Amperex made tube has staggered greyplates. Not often found in the USA. Date coded 1968, very nice match between triodes and between tubes.

$140.00 per pair

0

6SN7GT Haltron British made

New Old Stock Original Box. This rare British tube has black staggered plates with extra spacer rods. Not often found in the USA.

$50.00

1

6SN7GT TungSol early grey "T" plates, medium glass envelope. MATCHED PAIR

New Old Stock Original Box and White Box. Middle 1950s vintage, rivals the military types in sound. Rare tubes. These have the high mounted, parallel grey "T" shape plates, identical in construction to the "bad boy" type by Sylvania. This is one sweet, 1950s tube! SINGLES ARE $40.00 EACH!

$90.00 per pair

1 pair

6SN7GT TungSol made Mouse Ears, black triangular plates, two round top mica side supports.

New Old Stock Original Box and White Box. Late 1940s and early 1950s vintage, rivals the military types in sound. Rare tubes. The two circular side mica plate supports give the tube a Mickey Mouse appearance. Some are branded with various USA brands, but all were Tung Sol made. Matched pairs, when available, are $85.00.

$40.00

4

6SN7GT/A/B TungSol black triangular plates.

New Old Stock Original Box and White Box. Late 1940s and early 1950s vintage, rivals the military types in sound. Rare tubes. These are a mix of envelope styles, but all are from the same period, and internal construction is similar in all. Add $5 per tube for matching into pairs.

$28.00

16

6SN7GTA RCA blackplate, side mounted getter, short glass envelopeMATCHED PAIRS

New Old Stock White Box. A nice, but small, batch of rare early RCA GTA type 6SN7 tubes. These have side mounted getters and short glass envelopes with staggered blackplates. These pairs are the cream of the crop, carefully matched to within 1-2 percent. These are often requested, but rarely found. These have been getting alot of press lately, as to their superb sound. Try 'em now before they are gone! Some labeled for other brands but are RCA made tubes.

$80.00 per pair

3 pairs

6SN7GT RCA blackplate, medium glass envelope.MATCHED PAIRS

New Old Stock White Box. The clearglass early version of this versatle and sweet-sounding dual triode. These have staggered blackplates and a bottom getter. Full black octal base with silver printing. Nicely matched pairs of this increasingly hard-to-find late 1940s tube.

$80.00 per pair

4 pairs

6SN7GT RCA blackplate, medium glass envelope.

New Old Stock White Box. The clearglass early version of this versatle and sweet-sounding dual triode. These have staggered blackplates and a bottom getter. Full black octal base with silver printing.

$33.00

5

6SN7GT RCA blackplate, GREYGLASS, short glass envelopeMATCHED PAIRS

New Old Stock White Box. At last! A batch of the rare RCA greyglass 6SN7GT blackplate tubes! These pairs are the cream of the crop, carefully matched to within 1-2 percent. These are often requested, but rarely found. These are late 1940s vintage, the best 6SN7 tube RCA made, some say better than the 5692 type! Some labeled for other brands but are the same RCA made greyglass tubes.

$98.00 per pair

2 pairs

6SN7GT RCA blackplate, GREYGLASS, short glass envelope.

New Old Stock White Box. At last! These are often requested, but rarely found. Many dated 1948, this is the best 6SN7 tube RCA made, some say better than the 5692 type! Some of these have various other brands on the label, but are the genuine rare greyglass type.

$43.00

2

6SN7GTB RCA blackplate, mostly short glass envelope.

New Old Stock Original Box and White Box. Soaring demand is pulling this fine tube out of the market fast. Stock up now! I have both orange label and silver label types. Matched pairs $50.00!

$22.00

67

6SN7GTA by General Electric With Side Getter, short glass envelope, copper grid posts.

New Old Stock Original Box and whitebox. These sound as good as the redbase RCA at a fraction of the cost. A bit of pleasant warmth in the midrange, plus some reports indicate the side mounted getter adds ridigity to the plate structure, reducing microphonics. The GTA is the early version of this tube and sought out for it's mellow sound. Matched pairs $80.00!

$35.00

15

6SN7GTB by General Electric With Side Getter, short glass envelope, copper grid posts.

New Old Stock Original Box and whitebox. These sound as good as the redbase RCA at a fraction of the cost. A bit of pleasant warmth in the midrange, plus some reports indicate the side mounted getter adds ridigity to the plate structure, reducing microphonics. These are a bargain now, but as "fad" NOS tubes vanish, these quality USA performers will be worth their weight in gold. Matched pairs $50.00!

$22.00

79

6SN7GT Sylvania black STAGGERED Plates, green label, medium glass envelope, bottom getter . MATCHED PAIR

New Old Stock White Box. Medium glass envelopes. These are mid to late 1940s vintage, among the best 6SN7 types ever made, and are in very limited supply. These are the only Sylvania 6SN7 tubes made without the triangular shaped plates. These tubes are sought out for their flat, "staggered" blackplates, since these tubes are essentially the same as the rare and expensive Ken Rad VT-231. Matched to within 2 percent Gm. 1 pair made for GE.

$100.00 per pair

1 pair

6SN7GT Sylvania black STAGGERED Plates, green label, medium glass envelope, bottom getter .

New Old Stock White Box. Medium glass envelopes. These are mid to late 1940s vintage, among the best 6SN7 types ever made, and are in very limited supply. These are the only Sylvania 6SN7 tubes made without the triangular shaped plates. These tubes are sought out for their flat, "staggered" blackplates, since these tubes are essentially the same as the rare and expensive Ken Rad VT-231. Some made for other brands, but are Sylvania made.

$45.00

4

6SN7GT Sylvania Green label, triangular blackplate clearglass, bottom getter, medium glass envelope, "Bad Boy" type.MATCHED PAIR

New Old Stock white box. Very fine sounding, very rare blackplates from the period 1949-1953, currently all 2-rivet plate type, identical to those made for US military (VT-231). This is the "Bad Boy" era 6SN7GT Sylvania that has been getting much favorable press lately. No wonder, these rival the RCA 5692 redbase in quality, and are just as scarce. VERY difficult to find these in pairs! Also have a few singles at $45.00 each.

$99.00 per pair

2 pairs, 1 single

6SN7GT Sylvania made, triangular blackplate or gunmetal plate clearglass, bottom getter, medium glass envelope, "Bad Boy" type.MATCHED PAIR

New Old Stock white box. Very fine sounding, very rare blackplates from the period 1949-1953 (including the 2-rivet plate 1951), identical to those made for US military (VT-231). This is the "Bad Boy" 6SN7GT Sylvania that has been getting much favorable press lately. No wonder, these rival the RCA 5692 redbase in quality, and are just as scarce. Save big on these Sylvania made Bad Boy tubes, that are made and labeled for other brands. Same tube different label. Lower price!

$39.00

7

6SN7GT / or early GTA type, Sylvania Triangular Plates, Sylvania green or yellow label, early 1950s, heavy top getter (chrome top). MATCHED PAIRS

New Old Stock Original Box and White Box. Short glass envelopes. These are late 1940s vintage, among the best 6SN7 types ever made, and are in very limited supply. Closely matched under load for Gm and plate current. These are the "civilian" version of the 6SN7W military tubes listed above, and probably one of the best non-military types around. These are the shorties with the heavy top and sides getter flashing. These are not like the later yellow and red label GTB types of the '50s and '60s, with the smalll top getter patch. A few single tubes available at $40.00 each.

$85.00 per pair

4 pairs

6SN7GT / or early GTA type, Sylvania made OEM, Triangular Plates, green label type, early 1950s, heavy top getter (chrome top)

New Old Stock Original Box and White Box. Short glass envelopes. These are late 1940s vintage, among the best 6SN7 types ever made, and are in very limited supply. These are Sylvania made for other brands, with labels like Philco, Zenith, and Motorola. Closely matched under load for Gm and plate current. These are the "civilian" version of the military tubes listed above, and probably one of the best non-military types around. These are the shorties with the heavy top and sides getter flashing. These are not like the later yellow and red label GTB types of the '50s and '60s, with the smalll top getter patch. Tubes are matched electrically, brands on label may vary. Here is a chance to try a rare Sylvania tube at a savings.MATCHED PAIRS, WHEN AVAILABLE, ARE JUST $65.00 PER PAIR.

$30.00

2

6SN7GTB Sylvania Triangular Plates, yellow and early green label, early 1950s, heavy top getter (chrome top). MATCHED PAIR

New Old Stock Original Box and White Box. Short glass envelopes. These are late 1940s-early 1950s vintage (most with the early green label), very first issue of the GTB type, among the best 6SN7 types ever made, and are in very limited supply. Closely matched under load for Gm and plate current.These are the "civilian" version of the military tubes listed above, and probably one of the best non-military types around. These are the very first of the GTB types, but are from the same period as the GTA tubes, with the heavy chrome dome getter flashing extending up to 1/2 inch down the sides of the tube. These are not like the later yellow and red label GTB types of the '50s and '60s, with the smalll top getter patch.

$75.00 per pair

15 pairs

6SN7GTB Sylvania Triangular Plates, yellow label, early 1950s, heavy top getter (chrome top).

New Old Stock Original Box and White Box. Short glass envelopes. These are late 1940s vintage, among the best 6SN7 types ever made, and are in very limited supply. These are the "civilian" version of the military tubes listed above, and probably one of the best non-military types around. These are the very first of the GTB types, but are from the same period as the GTA tubes, with the heavy top and sides getter flashing. These are not like the later yellow and red label GTB types of the '50s and '60s, with the smalll top getter patch.

$29.00

5

6SN7GTB Sylvania made OEM, Triangular Plates, green label, early 1950s, heavy top getter (chrome top).

New Old Stock Original Box and White Box. Short glass envelopes. These are late 1940s vintage, among the best 6SN7 types ever made, and are in very limited supply. These are the same tubes as those labeled Sylvania like above, but these are made for Motorola, Philco, and other brands. These are the "civilian" version of the military tubes listed above, and probably one of the best non-military types around. These are the very first of the GTB types, but are from the same period as the GTA tubes, with the heavy top and sides getter flashing. These are not like the later yellow and red label GTB types of the '50s and '60s, with the smalll top getter patch. MATCHED PAIRS, WHEN AVAILABLE, ARE JUST $45.00 PER PAIR.

$20.00

1

6SN7GTB Sylvania Triangular Plates & Top Getter ("chrome top")

New Old Stock original box and White Box. This is the early version of the "triangular plate" 6SN7 and is in great demand today. Mostly short glass envelope. 1950s and 1960s vintage, yellow and red labels. MATCHED PAIRS $50.00!

$20.00

22

6SN7GT/A/B Various USA Brands, various sizes.

New Old Stock Original Box and White Box. Mostly Raytheon and Westinghouse made tubes, with brands such as Zenith, Silvertone, CBS, Arvin, Motorola, and many others. Excellent vintage NOS USA tubes, bargain price!

$17.00

47

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