Best 6SN7 pairs listed at:

6SN7 and Equivalents (click on links below to check stock) CV1988=6SN7GTY Brimar (STC) England 6SN7GT / 6SN7GTA / 6SN7GTB CBS (Hytron) $129/pair 6SN7GT / 6SN7GTA GE 6SN7GTB GE 6SN7GTB / 6SN7WGTA GE CANADA 6SN7GT Hytron 6SN7GTB JAPAN 6SN7GT Ken Rad ECC32=CV181 Mullard UK ECC33=6SN7GT Mullard UK B65=6SN7GT Osram UK 6SN7GTB / 6SN7WGTA Philips USA 6SN7GT Raytheon VT-231=6SN7GT / 6SN7GT / 6SN7GTA RCA 6SN7GTB RCA (recommended) 5692 RCA Red Base and CBS Hytron brown base VT-231=6SN7GT 1940's 6SN7W Sylvania 1941-1945 (in stock) 6SN7GT / 6SN7GTA Sylvania chrome top 1946-1953 6SN7GTB Sylvania 1950's 6SN7GTB Sylvania 1960 - 1970's ($99 - $149/pair) (best value) 6SN7WGTA Sylvania brown base 1960 - 1970's VT-231=6SN7GT coated glass 1942-1944 (in stock) 6SN7GT / 6SN7GTB Tungsol 1940's - 1960's 6SN7GTB Westinghouse


6SN7GT US BRANDS TECHNICAL INFORMATION (6SN7GT and VT-231 have a 300VDC Max Plate Voltage rating, most are 1940's) (6SN7GTA is improved, uprated to 7.5 watts plate dissipation, 450VDC Plate Voltage rating, electrically similar to 6CG7) (6SN7GTB is a controlled warm-up version of 6SN7GTA; 11 second heater warmup, 450VDC Plate Voltage rating. It also has 200VDC heater/cathode voltage rating) (6SN7WGT is final ruggedized version with heater-cathode voltage uprated from 100 to 250 volts) (5692=6SN7GT substitute only if the maximum plate volatge is held under 275VDC. It is exceptionally stable, has a very rigid cosntruction and very uniform triode sections. 10,000-hour lifespan.) (6J5GT = 1/2 6SN7GT) (Variants of 6SN7GT=1633, 5692, 6042, 6180, VT-231, CV170)
CV1988=6SN7GTY / 6SN7GT Brimar England 1950's-1970's (highly recommended, the best sounding 6SN7 for the money; it's strengths are its super soundstage - very wide open sound, it's a very musical tube, good midrange detail and high-end extension, bass ok but not thunderous) - Deja Vu Audio Type 45 amp - Cary preamps and amps - Singlepower - Ultraverve - Wyetech Topaz 572B SET amp - Cary / AE-3 DJH preamp TO BUY CV1988=6SN7GTY Brimar UK
SONIC COMMENTS ON CV1988 Brimar BLACK BASE 1970: ----------------------------------------------- "I am now listening to the Brimar CV1988 tubes. They are awesome! As compared to Sylvainia VT-231, they highs are more remote, and the bass is much lower and more prominent. They give an excellent and very lifelike presentation of orchestral works. Very dynamic overall performer! I will further experiment with different I/C cables. - Alexander" SONIC COMMENTS ON CV1988 versus CV181: ------------------------------------- "The ECC32/CV181 is my favorite. The music becomes alive, with more dynamics and realism. Its like the band moved into my living room. My wife liked the CV1988 for vocals, it's so smooth, detailed, transparent, and fills the room with sound from floor to ceiling, wall to wall. Simply put, both tubes are excellent and way better than anything I've heard. Of course both tubes are still breaking-in so I expect them to only get better"



6SN7GTA / 6SN7GTB CBS USA 1950's - 1960 TO BUY 6SN7GTB CBS

6SN7GT / 6SN7GTA GE 1950-1955 (top rated 6SN7; nice imaging and romantic, satisfying sound, very good bass and accurate, detailed midrange) 6SN7GTA GE "Gray Plates" copper grid posts: ------------------------------------------ 1 tube $65) 6SN7GTA GE "Gray Plates" side getter NOS 1952 (recommended) 1 tube $25) 6SN7GTA GE "Gray Plates" side getter used/tests like rebranded Zenith slight tilt in glass 1953 6SN7GTA GE "Gray Plates" side getter used/good: 1 tube $20) 1952 slight glass tilt 1 tube $20) branded Stromberg Carlson 1953 1 tube $10) 6SN7GTA GE "Gray Plates" side getter used/tests good, broken guide pin 1953



6SN7GTB GE 1955-1960 side getter (very clean detailed sound, nice high end, good when used with GE 211, not as warm as RCA) - COFFMAN LABS G1-A preamp 1) 1957 used/very good $25 1) 1957 like new $30 1) 1960 orange print - like new $25



6SN7GTB GE 1960's (very clean detailed sound, nice high end, good when used with GE 211, not as warm as RCA) (pairs available from singles listed below) - MFA Luminence preamp 1990 TO BUY 6SN7GTB GE

6SN7GTB GE USA / GE Canada 1970's (very clean detailed sound, nice high end, good when used with GE 211, not as warm as RCA) (most have SERIES FILAMENT, you can see they filament wire light up orange at top of glass) TO BUY 6SN7GTB GE
COIN-WAFER BASE: --------------- 1 low noise pair $39) 6SN7GTB GE COIN-BASE NOS 1970's original boxes - same internals (good value) 1 tube) 8/8.2ma branded FAA-6SN7GTB GE green printing 1 tube) 8.1/8.4ma branded RCA red printing 1 low noise pair $50) 6SN7GTB GE COIN-BASE NOS rebranded RCA 1970's red printing original boxes (good value) 1 tube) 9.7/9.8ma 1 tube) 9.7/10.1ma 3/16" taller glass 1 platinum low noise tube $30) 6SN7GTB GE COIN-BASE NOS 1970's white printing original box (10.5/10.7ma) (best single) 1 platinum low noise tube $22) 6SN7GTB GE COIN-BASE NOS 1970's white printing original box (7.3/7.5ma) 1 low noise tube $20) 6SN7GTB GE COIN-BASE NOS rebranded RCA 1970's red printing original boxes slightly mismatched triode sections (good value) (7.65/8.5ma)



6SN7GTB / 6SN7WGTA GE CANADA 1970 (tall ribbed gray plates, copper grid posts, side-getter, very low noises) 6SN7WGTA brown base 1970 (low noise) 6SN7WGTA CANADA: --------------- 1 Low Noise Tube $35) 6SN7GTB GE Canada tall bottle NOS around 1970 (9.0/9.3ma) (recommended)



6SN7GT Hytron USA 1950-1955 (clear, open, detailed, nice overall 6SN7GT) TO BUY 6SN7GT Hytron
SINGLE TUBES: ------------ 1 tube slightly microphonic $49) JAN-CHY-6SN7GT Hytron NOS 1951 parallel black plates (8.0/8.2ma) 1 tube slighly microphonic $45) 6SN7GT Hytron NOS 1948 (7.7/8.5ma) 1 platinum tube slightly microphonic $45) JAN-CHY-6SN7GT Hytron NOS 1951 in white box, a few scratches on base (9.5/9.7ma)



6SN7GTB JAPAN - Eddie Current Balancing Act 2010 1 low noise tube $25) 6SN7GTB Channel Master JAPAN NOS gray ribbed plates D getter halos



6SN7GT Ken Rad 1940's - 1950's / VT-231 Ken Rad 1945-1950 (some report these are nice in Supratek pre's and I have used one in a Dehavilland Ultraverve) 6SN7GT Ken Rad 1940's (staggered black ribbed plates) All Ken Rad 6SN7GT 1940's - 1950 have copper grid posts 6SN7GT Ken Rad BLACK BASE - BLACK COATED GLASS - BLACK "STAGGERED" PLATES: ------------------------------------------------------------------------- sold) US NAVY-CKR-6SN7GT Ken Rad Kuhl-Tube NOS 1943-1944 cryo treated for 36 hrs, copper grid posts, coated glass, staggered plates 6SN7GT Ken Rad BLACK BASE - CLEAR COATED GLASS - BLACK "PARALLEL" PLATES: ------------------------------------------------------------------------- 1 platinum low noise tube $45) JAN-CKR-6SN7GT Ken Rad black ribbed plates copper grid posts used/tests very good 1950 (7.0ma / 7.0ma) 1) 6SN7GT Ken Rad branded GE used/good 1950 $30 (7.5ma / 8.0ma) 1) 6SN7GT Ken Rad used/60-65% 1950 $20 (6.0ma / 6.0ma) 1) 6SN7GT Ken Rad branded GE used/good 1948 $25 1) 6SN7GTA Ken Rad - short base - side getter - weak - display tube 1951 $2 1) 6SN7GT Ken Rad branded Motorola - weak - display tube 1950 $2 1) 6SN7GT Ken Rad branded GE - weak - display tube 1950 $2



ECC32=CV181 Mullard / ECC33=6SN7GT Mullard to see ECC32=CV181 Mullard STOCK AND PICTURES
to see ECC33 Mullard STOCK AND PICTURES

B65 Osram UK 1950's sold out
6SN7WGTA Philips USA 1980's sold out

6SN7GT / 6SN7GTB / 6SN7WGT / VT-231 Raytheon USA 1940's - 1960's - Supratek - Wheatfield HA-2 headphone - Cary - Rogue - Canary Audio - Apex Pinnacle Headphone Amplifier and Stereo Preamplifier by Peter Millett TO BUY 6SN7GT Raytheon
SINGLE TUBES: ------------ 0 low noise tube $90) 6SN7GT Raytheon NOS TALLER BOTTLE black base, black ribbed parallel plates, copper grid posts in white box 1954 (9.9/10.8ma) yellow print 0 tube $35) 6SN7GT Raytheon used/good TALLER BOTTLE black base, black ribbed parallel plates, copper grid posts in white box 1954 (7.4/8.4ma) yellow print 0 low noise tube $22) 6SN7GTB Raytheon tall black plates used/good 1960's (7.9/8.1ma) REFERENCE PICTURES: ------------------ VT-231 Raytheon 1944, 1945 (2 styles) 6SN7GT Raytheon 1940's, 6SN7GT around 1950, 6SN7WGTA brown base 1955 "U" getter halo

6SN7GT / VT-231 RCA 1942-1954 (most have gray phosphor coated glass)

1940's SINGLE TUBES: most 1940's RCA 6SN7GT are slightly microphonic ------------------- 1 tube $40) 6SN7GT RCA gray coated glass used/good mid-1940's (8.2/9.2ma) 1 tube slightly microphonic $25) JAN-CRC-6SN7GT RCA gray coated glass used/tests good, some scratches on base (7-35=1947) (9.1/10.3ma) 1 tube slightly microphonic $32) JAN-CRC-6SN7GT=VT-231 RCA gray coated glass used/good early 1940's (H1E) (10.1/11.0ma) 1 platinum tube slightly microphonic $29) JAN-CRC-6SN7GT=VT-231 RCA gray coated glass used/good early 1940's (V1E) smeared base printing (8.7/8.9ma) 1950's: ------ 1 tube $25) 6SN7GT RCA coated glass used/good/75% 1951 copper grid posts (7.7/7.8ma)



6SN7GT RCA 1950-1953 - Ultraverve TO BUY 6SN7GT RCA
6SN7GT: ------- 1 tube $40) 6SN7GT RCA used/good (2-13=1952) (8/8.6ma)
6SN7GTB RCA 1950's - 1961 (black base - black plates - red or silver printing - smooth rich sound) - Conrad-Johnson CAV-50 intergrated amp - Atma-Sphere MA-1 Mk II.2 Amplifier - Antique Sound Lab AQ1006 Mono Block amps - CARY preamps and amps - Rogue Metis 2004 - Wright Sound TO BUY 6SN7GTB RCA
1 low noise tube $38) 6SN7GTB RCA tall black base red printing 1950's used/good "MZ" date code (9.6/11.5ma) 1 platinum low noise tube that is slightly microphonic $45) 6SN7GTB RCA NOS 1950's "LQ" date code (9.2/9.3ma) 6SN7GTB SIDE-GETTER / SHORT BOTTLE 1950-1957: SILVER PRINT -------------------------------------------- 1 platinum low noise tube $35) 6SN7GTB RCA black base side getter short bottle used/good "WLT" date code 1950's (9.7/10ma)



6SN7GTB RCA Canada 1950's 1 Low Noise tube $50) 6SN7GTB RCA Canada NOS, build like 6SN7GTB RCA USA in RCA box 1960's 1 Low Noise tube $50) 6SN7GTB Marconi Radiotron Canada NOS original boxes, copper grid posts, plate construction identical to VT-231 1950's



6SN7GTB RCA 1960 - 1970's (very good overall 6SN7GTB, nice warm sound) - CARY SLP-05 preamp - Atma-Sphere OTL amp - Cary CAD 300SEI TO BUY 6SN7GTB RCA
SINGLE TUBES: ------------ 1 Low Noise tube $30) 6SN7GTB RCA black plates used/like new 1960's slightly tilted glass (10.5/11.5ma) 1 Low Noise tube $30) 6SN7GTB RCA black plates NOS 1960's no printing (11/11.4ma) 1 Low Noise tube $40) 6SN7GTB RCA black plates NOS 1960's (8.6/9.2ma) 1970-1980: --------- 4 pairs $70/pair) 6SN7GTB RCA coin-base/wafer-base NOS 1970's (best value) (2 pairs for $129)

6SN7GT Russian (older NOS) 5) 6SN7GT Russian made branded as "RCA" NOS 1980's $12 ($30/pair) 1) 6SN7GT Russian made branded as "Philips Holland" black base in white box $12 5) 6SN7GT Russian made branded as "Westinghouse" NOS 1991 $12 ($30/pair, 2 pairs, good value)



6SN7GT / VT-231 Sylvania 1940-1945 (very musical tube from top to bottom, smooth non-grainy midrange, wide-deep and open soundstage, extended high end, this tube does alot of things right, somewhat soft deep bass) - Singlepower SDS-XLR - CARY - Yagin CD3 Tube buffer 6SN7GT or VT-231 Sylvania 1940's: -------------------------------- listed below 1 low noise tube $89) 6SN7GT Sylvania 1940's black base NOS parallel plates like VT-231 (9/10ma) listed below 1 tube slightly microphonic $65) VT-231=6SN7GT Sylvania used/like new 1940's (10.1/10.7ma) listed below 1 platinum tube $75) VT-231=6SN7GT Sylvania like new 1940's (8.5/8.6ma) listed below 1 tube slightly microphonic $45) 6SN7GT Sylvania tests like new 1940's, tests very strong, hairline crack in base a few small chips off edge of base (11.8/12.3ma) listed below 1 tube slightly microphonic $35) 6SN7GT Sylvania used/tests like new 1944 rebranded Made for Canadian Marconi Company (10.5/11.6ma) VT-231 SONIC COMMENTS: --------------------- "I checked the Sylvania VT-231 tubes today at last. (I checked the Brimar CV1988 earlier with my Cary SLI-80 integrated as soon as I received them and liked them at once). I inserted the Sylvania VT-231 tubes in another amp - the EL-34 powered Cary SLI-50 integrated in place of KenRad CKR 6SN7 GT. I can say that both sound awesome. The Sylvalia VT-231 tubes are not only very sairy and detailed, they also have very articulate bass. - Alexander"



JAN-CHS-6SN7W Sylvania (Black Base) Chrome-Top 1945 (sound: very smooth and balanced, clean presentation, fantastic detail, very tight-clear bass and superb accuracy, nice 3D soundstage, all have black rectangle shaped plates with internal metal support rod) (#1 top rated US made 6SN7 in VTV magazine) - ALO Audio Studio Six - Yaqin SD-CD3 6SN7W BLACK BASE: ---------------- Best 6SN7W pairs listed at: 0 microphonic tube $79) JAN-CHS-6SN7W Sylvania "TALL BOTTLE" tests like new in original box 1945 (9.4/9.9ma) Sonic Comments: -------------- "Received the 6SN7Ws yesterday -- plugged them in last night -- they really made a difference -- the music coming out of my gear is the most lifelike I've heard so far" Sonic Comments on 6SN7W: ----------------------- "When I put the 6SN7W into my preamp the other night, my mouth literally hung open -- the difference in sound was night and day -- a film composer buddy of mine stopped by -- we put on a couple of his soundtracks -- his comment was that he'd never heard his music reproduced in such a natural manner --"



JAN-CHS-6SN7W Sylvania (Metal Base) Chrome-Top 1942-1945 (many regard this as the best sounding US MADE 6SN7) sold out

6SN7GT 1946-1953 (excellent overall sound; quiet, detailed and smooth, recommended) - Pagano 300B SET Customer Sonic Comments: ----------------------- "BTW, those “chrome dome” tubes I got are INCREDIBLE! In comparison my Ken Rad's sound dead. They do everything better including a near holographic 3D image."

6SN7GT: ------ listed below 1 platinum low noise tube $49) 6SN7GT Sylvania 1951 used/good staggered black ribbed plates copper grid posts (8.2/8.5ma) 6SN7GT "chrome top" 1946-1953: ----------------------------- 1 platinum low noise tube $80) 6SN7GT Sylvania "chrome top" NOS 1946-1948 in white box (8.8/8.9ma) recommended 1 platinum low noise tube $69) JAN-CHS-6SN7GT Sylvania "chrome top" like new 1945-1946 in white box (9.6/10.2ma) recommended 0 low noise tube $0) JAN-CHS-6SN7GT Sylvania "chrome top" NOS 1953 in white box, parallel plates (10.2/11ma) recommended 1 platinum low noise tube $50) 6SN7GT Sylvania "chrome top" used/good 1952 in white box, parallel plates (7.8/8.0ma) recommended


6SN7GTA Sylvania (Chrome Top) 1950-1954 (excellent overall sound; quiet, detailed and smooth, recommended) - Pagano 300B SET 6SN7GTA "chrome top" with TRIANGULAR PLATES 1950-1954: ----------------------------------------------------- listed below 1 platinum low noise pair $135) 6SN7GTA Sylvania "chrome top" low hours/like new same date codes 1954 (recommended) 1 tube) 9.4/9.9ma 1 tube) 9.2/9.3ma 1 platinum low noise tube $65) 6SN7GTA Sylvania "chrome top" NOS 1954 (9.4/10.4ma) 6SN7GTA "chrome top" with PARALLEL PLATES 1950-1954: --------------------------------------------------- listed below 1 platinum low noise pair $150) 6SN7GTA Sylvania "chrome top" 1953 parallel plates (recommended) 1 tube) NOS 8/8.6ma original box 1 tube) like new 8.1/8.6ma white box 1 platinum low noise tube $90) 6SN7GTA Sylvania "chrome top" NOS 1953 rebranded EMERSON in EMERSON box (9.4/9.6ma) (best single)



6SN7GTB Sylvania "Chrome Top" 1950's (1950's Chrome Top GTB and WGT are detailed, quiet, smooth, alive, musical, with good bass, a very good 6SN7) - Grant Fidelity (Yaqin) B-283 mkII tube buffer - Valvet Audio preamp - Singlepower PPX3-SLAM - Aesthetix Calypso - CJ MV55 - Cary SLP-05 preamp - Yaqin MS-34C - Modwright Sony 5400ES - Oppo/Modwright BDP-95 - VAC Renaissance 30/30 MKIII - Bottlehead Crack TO BUY 6SN7GTB Sylvania
PAIRS: ----- 1 platinum pair $119) 6SN7GTB Sylvania "chrome top" used/low hours/tests like new 1955-1956 (best value) 1 tube) 9.4/9.8ma 1956 1 tube) 9.2/9.6ma 1955 USED/GOOD: --------- 1 platinum pair $95) 6SN7GTB Sylvania "chrome top" used/tests good, yellow printing, 1956 (best value) 1 tube) 8.4/8.9ma Sylvania rebranded Zenith 1 tube) 8.5/8.8ma Sylvania 1 platinum pair $75) 6SN7GTB Sylvania "chrome top" used/tests good, green printing, same date codes 1957 (best value) 1 tube) 7.5/7.6ma 1 tube) 7.6/7.8ma 1 platinum pair $69) 6SN7GTB Sylvania "chrome top" used/tests good, green printing, same date codes 1957 (best value) 1 tube) 7.7/8.4ma 1 tube) 7.9/8.6ma 1 Low Noise Pair $65) 6SN7GTB Sylvania "chrome top" used/good 1950's (good value, recommended) 1 tube) 8ma/9.5ma Sylvania yellow printing 1 tube) 7.7ma/9.0ma branded Zenith red printing SINGLE TUBES: ------------ 1 platinum tube $60) 6SN7GTB Sylvania "chrome top" like new 1950's (9.6/9.8ma)
6SN7GTB Sylvania 1950's - 1960 (not chrome top) (excellent 6SN7GTB, probably 2nd only to Tungsol, most have very low noise and no microphonics, very smooth, good bass, reliable) - Cary SLP-05 preamp listed below 1 platinum low noise pair $150) 6SN7GTB Sylvania NOS copper grid posts late 1950's - 1960 1 tube) 6SN7GTB Sylvania NOS branded Philco, copper grid posts, 1960 (9.0/9.2ma) (recommended) 1 tube) 6SN7GTB Sylvania NOS, copper grid posts, 1950's yellow printing (9.0/9.2ma) (recommended) listed below 1 platinum low noise pair $95) 6SN7GTB Sylvania branded "AUDICHRON" like new in white boxes 1957-1958 (recommended) BEST VALUE 1 tube) 9.2/9.3ma 1 tube) 9.6/9.7ma SINGLE TUBES: ------------ 1 platinum low noise tube $75) 6SN7GTB Sylvania clear top NOS copper grid posts side-getter 1950's original box (11/11.3ma) recommended) 1 platinum low noise tube $70) 6SN7GTB Sylvania NOS copper grid posts 1950's (10.2ma/10.6ma) (recommended) 1 platinum low noise tube $70) 6SN7GTB Sylvania NOS 1950's (9.2ma/9.4ma) (recommended)



6SN7GTB Sylvania 1960 - 1980 (Excellent 6SN7GTB) (nice detail, smooth sound, good bass, these are probably the best overall sounding 6SN7GTB) Kebschull 35/70 Cavalli Liquid Glass Rogue Audio 99 Magnum Cary SLP-05, SLI-80 Atma-Sphere amps DeHavilland preamp Audio Aero Prestige mono amps Audio Note 300B amp Antique Sound Lab Flora EX - DT Tektron Integrated amp TO BUY 6SN7GTB Sylvania
listed below - 6SN7GTB best value and sound 1 platinum low noise pair $99/pair) 6SN7GTB Sylvania NOS 1960's white printing (best value) 1 tube) 10.4/10.6ma 1 tube) 10.7/10.8ma 1 platinum low noise pair $99/pair) 6SN7GTB Sylvania NOS 1960's white printing (best value) 1 tube) 10.2/10.3ma 1 tube) 10.0/10.5ma listed below (5692 USA) on top of each tube 1 platinum low noise pair $99) 5692=6SN7GTB Sylvania black base NOS 1970's rebranded RCA 1979-1983 (best value) 1 tube) 11.2/12ma 1983 in white box 1 tube) 11.3/11.6ma 1979 in original box listed below 1 low noise pair $145) 6SN7GTB Sylvania NOS around 1960 (recommended) 1 tube) 9.5/9.7ma Sylvania branded Philco 1 tube) 10/10.5ma Sylvania listed below 1 low noise Kuhl-Tube cryo pair $139) 6SN7GTB Sylvania NOS 1960's 1 tube) 11.3/12.5ma red printing on glass, slightly smeared 1 tube) 10.7/12.0ma red printing one base SINGLE TUBES: ------------ 1 platinum low noise tube $50) 6SN7GTB Sylvania NOS 1960's - 1970 white printing (11/11.5ma) 1 platinum low noise tube $50) 6SN7GTB Sylvania NOS 1960's - 1970 white printing (10.4/10.7ma)
6SN7GTB Sylvania coin-base / wafer-base 1970's - 1980's (good value) 6SN7GTB SYLVANIA COIN-BASE/WAFER-BASE 1970's: -------------------------------------------- 2 low noise pairs $50/pair) 6SN7GTB Sylvania coin-base NOS rebranded RCA original boxes 1970's - good value (2 pairs for $89) 2 low noise pairs $55/pair) 6SN7GTB Sylvania coin-base NOS original boxes 1979 same date codes - good value (2 pairs for $99) 6SN7GTB Sylvania NOS coin-base: 1 tube $25) white printing 1 tube $25) green printing 1 platinum tube $30) yellow printing, 1% sections (9ma/9ma) 6SN7GTB Sylvania NOS coin-base test 70%: 1 tube $15) yellow printing 1 tube $15) white printing



6SN7WGT / 6SN7WGTA Sylvania brown base 1950 - 1960 (Chrome Top) "real nice 6SN7, very tidy and well-behaved, smooth without being boring, good overall package without being squeaky and dull, these 6SN7 are highly recommended" - Cary preamps and amps - Audio Note SINGLE TUBES: ------------ 1 platinum low noise tube $85) 6SN7WGT Sylvania "Chrome Top" tall brown base/black parallel plates rebranded "UNITED" NOS 1952 in white box (10.3ma / 10.5ma) (best single) 1 low noise tube $80) JAN-CHS-6SN7WGT Sylvania "Chrome Top" tall brown base/black parallel plates NOS 1952 in white box, partially rubbed printing (9.4ma / 10.2ma) 1 platinum low noise tube $75) JAN-CHS-6SN7WGT Sylvania "Chrome Top" brown base/black parallel plates NOS 1958 (9.8ma / 10.2ma) (best single) 1 platinum low noise tube $70) JAN-CHS-6SN7WGT Sylvania "Chrome Top" brown base/black parallel plates poor printing 1960, gold printing was on tube, but was wiped off when tube was cleaned (8.5ma / 8.7ma) 1 platinum low noise tube $85) JAN-CHS-6SN7WGT Sylvania "Chrome Top" brown base/black parallel plates (713=1957) (11.0ma / 11.5ma) 1 platinum low noise tube $85) JAN-CHS-6SN7WGT Sylvania "Chrome Top" brown base/black parallel plates, white printing, around 1957-1958 (9.7ma / 10.4ma) 1 low noise tube $50) 6SN7WGT Sylvania "chrome top" brown base, black parallel plates like new 1955 (9.1ma / 9.5ma)



6SN7WGT / 6SN7WGTA Sylvania 1960-1985 (detailed, clean - open sound, good bass and high-end, not colored or tubey, very quiet - non microphonic 6SN7) (LOW NOISE - LOW MICROPHONICS) - AUDIO NOTE CONQUEST AMP - Cary - Ultraverve 6SN7WGT BROWN BASE: ------------------ 6SN7WGT SINGLE TUBES: -------------------- 1 platinum low noise tube $75) JAN-CHS-6SN7WGT Sylvania NOS 1961 copper grid posts, gold printing (8.2/8.4ma) 1 platinum low noise tube $75) 6SN7WGT Sylvania NOS early 1960's (9.5ma/10ma)
VT-231=6SN7GT Tungsol Black Round Plates 1940's (great sounding VT-231, some say the best sounding US made VT-231) - Singlepower SDS-XLR - Cary SLP-05 TO BUY 6SN7GT Tungsol black coated glass
Customer Comments on VT-231 Tungsol round plates: ------------------------------------------------ "Dear Mr. Biever, Thank you very much for your nice business. I received VT-231's safely and installed them on my SV300BTE (Sun Audio) immediately. I couldn't hear any noise from KLL42006s (field type, high efficiency loudspeaker), so I misunderstood my system didn't work well. And then, I found they were so quiet, so dynamic, so 3-dimentional and so musical. I have never listened to such a wonderful VT231/6SN7. Your estimation of these VT-231's as being "platinum low-noise" is absolutely true! Thank you again for your nice business."

6SN7GT / 6SN7GTB / 6SN7WGT Tungsol 1940's - 1960's (superb sounding, low noise 6SN7GTB, good bass, lively sound - not dull) - Antique Sound Lab Flora EX DT - Cary TO BUY 6SN7GT and 6SN7GTB Tungsol
6SN7 TUNGSOL REFERENCE PICTURE: ------------------------------ LEFT TO RIGHT: VT-231=6SN7GT Tungsol round plates 1940's, GTB tall bottle 1956, GTB short bottle/tall base 1955, GTB 1964



6SN7GTB Westinghouse USA 6SN7GTB Westinghouse USA ribbed "Black Plates" copper grid posts: 1) "D" getter halo 1957 short bottle $55 (recommended) 1) "D" getter halo 1959 tall bottle $50 1) round halo 1963 tall bottle $45 1 low noise tube $30) 6SN7GTB Westinghouse USA "Black Ribbed Plates" copper grid posts used/like new 1950's 1 low noise tube $25) 6SN7GTB Westinghouse USA "Gray Ribbed Plates" copper grid posts, like new, tall bottle 1963 1 platinum low noise tube $30) 6SN7GTB Westinghouse USA Gray Ribbed Plates copper grid posts 1969 original box 1 platinum low noise tube $40) 6SN7GTB Westinghouse USA Gray Ribbed Plates copper grid posts 1960's original box




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