Best AUDIO TUBES listed at:

(click on links below to check stock) 6005 / 6005W / 6012 / 6014 6021 / 6021W US Brands / Brimar UK / EI Yugo 6072 / 6072A US Brands 6080 / 6080WA / 6080WB / 6080WC / 6087 / 6094 Bendix 6085=E80CC Dual Triode Holland 6098=6AR6WA Tungsol / 6106 Bendix / 6111 / 6112 6146 / 6146A / 6146B / 6146W 6188=6SU7WGT Sylvania / Tungsol 6189=12AU7WA / 6197 / 6201 / 6202 / 6203 / 6211 / 6227 6336 / 6360 6384 Bendix / 6385 Bendix / 6386 GE 6414 / 6463 / 6520=6AS7G / 6528 6661 / 6686 / 6688 / 6689 / 6754 6829 / 6844 / 6883 / 6900 / 6907 / 6939 6973 / 7014 / 7015 / 7044 / 7054 / 7056 / 7058 / 7059 / 7060 / 7061 7062 / 7119 / 7167 / 7189 / 7193 / 7199 7236 / 7241 / 7242 / 7247 / 7289 / 7316 / 7410 / 7534 7581A US Brands 7586 / 7587 / 7643 / 7687 / 7728 / 7729 / 7730 / 7788 8000 / 8003 / 8005 / 8008 / 8013A / 8020 / 8029 / 8032 / 8037 8068 GE / 8072 / 8077 / 8102 / 8122 / 8156 / 8223 / 8233 8236 / 8298 / 8370 / 8417 / 8421 / 8423 / 8458 / 8509 / 8532 8533 / 8556 / 8643 / 8844 / 8906 / 8950 / 9001 / 9002 / 9003 / 9004 / 9005 / 9006
6005=6AQ5 Beam Power Tetrode (The 6005 = premium computer-rated 6AQ5) (6095=6AQ5W, also see Bendix 6094 which is variant of a 6AQ5, 6094 data and comparison analysis listed under 6094) - AudioTropic Mbius linestage preamp - Groove Tubes ViPre MicPreamp - Fender Musicmaster Bass Amp circa 1970-1971 - Epiphone EA 50T (modified) 1960 TO BUY 6005 and 6AQ5 NOS

6007 / 6011=710 TO BUY 6007

6012 Tetrode Thyratron TO BUY 6012

6014=C1K Thyratron TO BUY 6014

6021 / 6021W Dual-Triode (6021=ruggedized 6BF7, Vplate max = 165V, Iplate max = 22ma) (6021 Typical Operation: Vplate=100V, Iplate=4.5-6ma, Gm=6500, Mu=40-45, Rplate=6500-7Kohms) - Audio Aero Capitole Mk II cd player - Audio Aero Prima cd player - Audio Aero Capitole preamp - Audio Aero Capitole Classic SE - Audio Aero Capitol Reference 2007 - Audio Aero Prestige SACD/CD Player - Vincent SP 331 amplifier (upgrade from 6N16 tube) TO BUY 6021 and 6021W NOS Pairs
sonic comments: -------------- "Changing the original 6021W in my Audio Aero Capitol Signature to Platinum Sylvania 6021W was a big improvement. The audio aero is more musical, better details, the sound stage is deeper, more holographic, better dynamic too. For me, the audio aero is now better in all." Bests regards, Dominique/France
6024 Varian
6028=408A (also see Western Electric, Northern Electric Canada and LM Ericcson Sweden 408A on the Western Electric pages) - Little Dot I+ TO BUY 6028=408A SYLVANIA

6029 / 6046=25L6GT TO BUY 6029
TO BUY 6046

6072A Dual Triode (6072 is a long life and low microphonics 12AY7, heater current raised to 175ma per section) (6072A is computer rated and has higher leakage resistance) (6072A GE 5 Star, Raytheon and RCA are highly recommended) TO BUY 6072 and 6072A

6073=0A2 / 6074=0B2 (6073=Premium 0A2, 6074=Premium 0B2; ruggedized and high stability) TO BUY 6073=0A2
TO BUY 6074=0B2

6080 / 6080WA / 6080WB / 6080WC (6080=ruggedized 6AS7G, 6080 filament = 6.3V @ 2.5A, 13 watts plate dissipation per triode section) (also see variants 6AS7G, 5998, 6520) - Wheatfield HA-2 headphone amp - Darkvoice 336i - Gates Radio m-4167 - Little-Dot Mark VI TO BUY 6080, 6080WB, 6080WC
6080WC: ------ TO BUY 6080WC GE
TO BUY 6080WC PHILIPS

6082 Dual Triode / 6083 (6082=25V filament) TO BUY 6082

6084=E80F Pentode (High Quality EF86 Substitute) (Also see 6267=EF86 for substitute, this tube is a Special Quality Audio Frequency Amplifying Pentode with same pinout as EF86) TO BUY 6084=E80F

6085=E80CC Dual Triode Holland (10,000+ hour Dual Triode, very good audio tube, recommended) (6085 specs are similar to 12AU7, but 6085 has slightly higher plate resistance, lower Gm and lower Mu) (Shock and vibration resistant) (Vfil=12.6V @ 300ma or 6.3V @ 600ma) - Eastern Electric Minimax (sub for 12AU7) - Bottlehead headphone amp - Audio Note L3 phono kit MAX RATINGS: ----------- Vplate = 300V Iplate = 12ma Plate Dissipation = 2W Typical Operation: Vplate=250V, Vgrid=-5.5V, Gm=2700 TO BUY 6085=E80CC PAIRS NOS
TO BUY 6085=E80CC PAIRS and SINGLE TUBES

6087=5Y3WGTB Full-Wave Rectifier (6087=indirectly heated 5Y3GT, a 5AR4 is also indirectly heated) (also see 5Y3GT page) TO BUY 6087

6088=522AX TO BUY 6088

6091 National / B-6091 NIXIE (Burroughs) TO BUY 6091=8423 Nixie Tube

6094 / TE-18 Bendix Beam Power Tube (6094=10,000 hour version of 6AQ5A with hard-glass bulb, ceramic spacers, heater 600ma, power output uprated to 14 watts, DIFFERENT PINOUT=IS NOT A DIRECT SUB for a 6AQ5, you must make or buy an adapter socket) 6094 is more similar to 6AQ5A, but also is close to a EL84=6BQ5, ALL 3 have different pinouts TO BUY 6094 Bendix Pairs
TO BUY 6094 Bendix Pairs
SPECS: -----

Click here to download pdf file for 6094 BENDIX
6094: (Filament = 6V @ 600ma) (Base Diagram = 9DH) ---- Vplate max = 300V Vscreen max = 275V Pout max = 14 watts Vgrid typical = -12.5V (Iplate 40-45ma) 1=Grid 2-7=Screen 3-5=Filament 4-9=Plate 8=Cathode 6AQ5/A: (Filament = 6V @ 450ma) (6AQ5A is 7-pin version of 6V6GT) (Base Diagram = 7BZ) ------ Vplate max = 250V Vscreen = 250V Pout max = 12 watts Vgrid typical = -12.5V to -15V (Class AB1 Pentode) (Pout = 10 watts) (Iplate=40ma) 1=Grid 2=Cathode 3-4=Filament 5=Plate 6=Screen 6BQ5/EL84: (Filament = 6V @ 760ma) --------- Vplate max = 300V Vscreen = 300V Pout max = 12 watts A S/E 250 250 -7.3=Vgrid, 48ma=Iplate, 5.5ma=screen, 38,000=Ra, 11=Mu, 135=rk, 5,200=Zout, 5.7=Pout, 10=distortion AB1 P/P 250 250 -11.6 20-75ma 2.2-15 8,000 11 8 AB1 P/P 300 300 -14.7 15-92ma 1.6-22 8,000 17 10 1=NC 2=Grid 3=Cathode 4-5=Filament 6=NC 7=Plate 8=NC 9=Screen
6095=6AQ5W Beam Power Tube / 6097 TO BUY 6095
TO BUY 6097

6098=6AR6WA Tungsol (6098 is a premium 6AR6, 21 watts, Filament = 6.3V @ 1.2A, variant is 6384 by Bendix and Tungsol) (also see 6384 which is an uprated 6098) TO BUY 6AR6=6098 Tungsol

6100 Triode (Premium 6C4) (recommended to replace 6C4, also see 6C4 and CV4058 Mullard=M8080=6C4) - Conrad Johnson 0) 6100=6C4 "Premium Grade" Corvair USA Black Plate NOS (by GE) square getter halo with flat-foil crossbar 1964
6101 TO BUY 6101

6106=Premium 5Y3GT made by BENDIX (6106=indirectly heated 5Y3GT, filament current reduced to 1.7A, uprated to 1550 Volts) (6106 can be rebranded other names such as national or Heintz and Kaufman) TO BUY 6106 Bendix

6111 Pencil Dual Triode (6111: subminiature, 6.3V @ 300ma filament, mu=20, medium-mu audio dual-triode, computer rated) - Audio Note - Quad TO BUY 6111

6112 Pencil High-Mu Dual Triode (6112: subminiature, 6.3V @ 300ma filament, mu=70, high-mu, general use, computer rated)(Vplate=150V, Vgrid=-1V) Audio Note 1.1x DAC Audio Note CD3.1X Musical Fidelity kw 500 amp Musical Fidelity X-10v3 Tube Buffer TO BUY 6112

6130=3C45 TO BUY 6130=3C45

6134=6AC7 / 6136=6AU6WA Pentode TO BUY 6134=6AC7
TO BUY 6136=6AU6WA (for: Heathkit EA-3 amp)

6146 / 6146A/B=8298A / 6146W Beam Power Tube 6146/6146A = 20 watts, variants = 4604/4652/8042 6146B = 27 watts, variants = 8298/A 6146W = ruggedized version of 6146B - Yaesu 101B - Yaesu 902 - Heathkit - Kenwood TS-520, TS-520SE - Collins KWM-1 1957 TO BUY 6146 / 6146A / 6146B TO BUY 6146B TO BUY 6146W TO BUY 6146W
6158=CV4068 Dual-Triode / 6159/6159B Power Tetrode 0) 6158=CV4068 (6158 is special quality version of the 13D3) TO BUY 6159
6186=6AG5WA TO BUY 6186=6AG5
6188=6SU7WGT / 6SU7GTY Dual Triode (Premium 6SL7GT) (a 6SU7WGT is a 6SL7GT with a brown base, low gas and leakage and close triode section balance) (6SU7WGT specifications are passed by only 50% of NOS production 6SL7GT's) - CARY PH302 phono - ALL applications requiring a low noise 6SL7GT, see the 6SL7GT page - another sub is the 5691 RCA Red Base TO BUY 6188=6SU7GTY Tungsol and Sylvania

6189=12AU7WA Dual Triode (ruggedized and inexpensive sub for 12AU7) TO BUY 6189 RCA
TO BUY 6189W Sylvania and Philips

6197=6CL6 Pentode TO BUY 6197

6201=12AT7WA Dual Triode TO BUY 6201=12AT7

6202=6X4 / 6203=6X4W Full-Wave Rectifier (6202 has 7 pins, is a ruggedized 6X4 rated to 60,000ft, derated to 50ma) (6203 is a ruggedized 6X4 with 9 pins, heater current raised to 900ma, also see 6X4) TO BUY 6202 Rectifier TO BUY 6203 Rectifier
6211 / 6211A Medium-Mu Dual Triode (6211=computer rated 5844) ("A" version is rated for 10,000 hrs) MAX RATINGS: ----------- Vplate = 200V Plate Dissipation = 1.5W Typical Operation: ----------------- Class A Amplifier Plate Voltage 100 V Grid No. 1 Voltage Derived from Cathode Bias Resistor 470 Ohms Amplification Factor 27 Plate Resistance 7500 Ohms Transconductance 3600 Plate Current 4.6 mA TO BUY 6211 and 6211A

6216 Beam Power Tube / 6218=E80T / 6223 TO BUY 6216
TO BUY 6218
TO BUY 6223

6227=E80L Pentode (10,000+ hour premium grade power pentode; 8 watts) TO BUY E80L
Click here to see 6227 Amperex Holland Premium Quality "PQ"
6240G Luxman NEC JAPAN Dual Triode (6240G Luxman designed by NEC Japan, High Fidelity Audio Tube) - Luxman MB3045 amp w/EL34 power tubes - Luxman MQ3600 amp w/8045G power tubes 6240G Luxman NEC Japan NOS 1960's TO BUY 6240G

6252=AX9910 / 6263 Pencil Triode / 6264 TO BUY 6252
TO BUY 6263

6267=EF86 Pentode (Holland / Mullard / Telefunken) (also see 6084=E80F, best sounding are EF806S Telefunken, EF86 Tele, Z729 GEC, Mullard 1950's and Amperex Bugle Boy 1960's) TO BUY EF86=6267
6286 Subminiature Triode (4 mini wire leads) TO BUY 6286

6293 Beam Power Tube 6293=6146 for pulse modulator use: 10W, 350V, 3A peak
6299 Planar UHF Triode / 6312 TO BUY 6299

6336/A Low-Mu Twin Power Triode (6336=(2) 6080 in parallel, Pout max=30 watts per plate, Iplate max=400ma per plate, Vplate max=400VDC, mu=2.7, Gm=13,500) (6336A=6.3V @ 5A Filament) (6528=6336A with higher Gm=37,000 and higher mu=9) - Lux amp TO BUY 6336A Tungsol and Chatham and 6336B Cetron
6336A used with GRAPHITE PLATES: -------------------------------- 2) 6336A RCA used/test good 1960's $30 1) 6336A Tungsol branded Westinghouse used/test like new 1968 $26 (Gm=5000 and 6000) 1) 6336A Tungsol branded Westinghouse used/test 60-65% 1968 $20 (Gm=3200-4000) 1) 6336A Tungsol branded Westinghouse used/test 60% 1968 $20 (Gm=3000-3400) 1) JAN-CAHG-6336A Tungsol branded Chatham used/test 60-65% 1961 $20 (Gm=3300-3500) 1) JAN-CAHG-6336A Tungsol branded Chatham used/test 60-65% 1961 $20 (Gm=3400-3500) 1) JAN-CAHG-6336A Tungsol branded Chatham used/test 65% 1961 $22 (Gm=3400-3800) 1) JAN-CAHG-6336A Tungsol branded Chatham used/test 65% 1961 $22 (Gm=3400-3700)
6350 Dual Triode (best sounding 6350 are Sylvania black plates 1950's followed by GE black plates then RCA) TO BUY 6350

6354 TO BUY 6354

6360 Twin Power Tetrode TO BUY 6360

6384=Type TE-27 Bendix / Tungsol / Cetron Beam Power Tube (When conservatively used this tube has a 10,000 hour lifespan; Vplate=300V) (6384=Premium 6AR6/6098, 6384=30 watts) (very high quality audio tube, superb construction) (Vplate max=750V, Vscreen max=325V, Iplate max=125ma, cathode warm-up time=45 seconds) - Abraxas SET amp - Dennis Had amp 6384 Bendix, Tungsol black early 1960's, Tungsol green, Cetron TO BUY 6384 PAIRS
6384 Bendix: (HY-G-300) (tested on Maximatcher Vplate=325V, Vgrid=-36V) and also tested on Amplitrex AT1000 ----------- TO BUY 6384 PAIRS

6385=5670=396A Dual Triode (6385=5670 with shield added and 500ma filament current) (10,000 hour rating) - Havana TO BUY 6385

6386 Dual Triode (6386=ruggedized and computer rated 2C51=396A) GE 5 Star 1961 orange printing, GE 5 Star 1960's white printing, GE, GE branded RCA 1970 - Fairchild 670 compressor - Gates Sta-Level compressor 1956 - Retro Sta-Level compressor (replica of the Gates) TO BUY 6386 GE
TO BUY 6386 GE branded RCA

6397 Subminiature Power Pentode TO BUY 6397
6414 Dual Triode / 6418=548DX Beam Power Tetrode (computer rated, 12.6V filament, also see 7062 and 5965) TO BUY 6414 TO BUY 6418=548DX
6442 Triode TO BUY 6442
6463 Dual-Triode (Filament=12.6VCT @ 300ma, 10,000 hour computer rated duotriode, 4.4W) DIFFERENT PINOUT than a ECC86, CANNOT! be directly subbed! 9CY pinout pattern, which is same as a 6350 - Audio Tekne TFM-9412 - Nuclear Reactor - Komuro 212E amp TO BUY 6463

6476A / 6485=6AH6WA / 6489=EA76 / 6510 TO BUY 6476A TO BUY 6485 TO BUY 6489 TO BUY 6510
6520 Duo-Triode (Premium 6AS7G) (the cadillac of the 6AS7G family, great upgrade from a 6AS7G, great choice instead of a 421A WE) - Woo WA2 MAX RATINGS: ----------- Vplate = 300V per sections Plate Dissipation = 14 watts (max ratings for 6AS7G = 250Vplate and 13 watts per section) Class A Amplifier: ----------------- Plate Voltage = 135V VGrid No. 1 Voltage Derived from Cathode Bias Resistor of 250ohms Mu = 2 Rplate = 280 ohms Gm = 7000 I plate = 112ma TO BUY 6520 Tungsol

6528A Duo-Triode (6336A with higher Gm) (6528=6336 with higher transconductance and mu) TO BUY 6528A Cetron
6550 POWER PENTODE TO BUY 6550

6587=PL-174 (reformatted 5C22) Hydrogen Thyratron TO BUY 6587 Thyratron
6637=BL31 VARIAN TO BUY 6637
6661=6BH6 Pentode / 6662 / 6664 / 6677 (6660-6681 Series of tubes are mobile-rated for heater supplies of 6.3V +/- 1.3V) (all were made by GE, RCA, Sylvania and Tungsol) TO BUY 6661=6BH6
TO BUY 6662=6BJ6

6678=6U8A Pentode/Triode / 6679 TO BUY 6U8A
TO BUY 6678=6U8A
TO BUY 6679=12AT7

6686=E81L Power Pentode (10,000 hour Power Pentode) - EMT 140 reverb TO BUY E81L=6686 NOS

6688=E180F Pentode (10,000 hour 9-pin frame grid broadband Pentode, variant is 7737) - Supratek Chenin, Cortese preamp - Yamamoto 06-3 2010 Rogers made in Holland 1956-1957 and Philips Holland 1971 TO BUY 6688=E180F
6689=E83F Pentode (10,000+ hour low noise Pentode) - Telefunken v76 preamp TO BUY 6689=E83F
6754=412A Full-Wave Rectifier (1250 PIV @ 100ma full-wave rectifier) TO BUY 412A Western Electric
6802 Counter / 6807 Thyratron TO BUY 6802 counter TO BUY 6807 Thyratron
6829 Dual Triode (6929=Premium 12AV7, also see 5695A GE 5-Star) - Exemplar 3910 by John Tucker - Lampizator DAC (Poland) TO BUY 6829
6842 Shunt / 6844 Nixie / 6877 TO BUY 6842 Victoreen TO BUY 6844 Nixie Nean Readout TO BUY 6877
6883/A/B Beam Power Tube / 6884 (6883A=mobile rated 6146 with 12V filament, also see 6146, 6883B=8032A has lower heater current rating) TO BUY 6883A / 6883B Power Tube TO BUY 6884
6900 Bendix Dual Triode (excellent sonics; incredibly tight and deep bass, superb midrange and top-end clarity, awesome inner resolution. I use the 6900 Low-Noise in my Emotive Audio Sira Preamp) (6900=ruggedized premium grade variant of 5687 with superior sonics, punchy lively sound) (6900 is also better sonically than a 7119 Amperex Holland PQ) (7044 is an excellent substitute for the 6900 at a cheaper price) 6900 and JEA-6900M Bendix "D" getter 1950's, 6900 Tungsol branded "MU" and JAN-6900, JAN-Cetron on right All the Tungsol and Cetron 6900 I have seen have "O" getter halos. The Tungsol have numbers stamped on bottom of tubes: i.e. "4", "8", "11" as an example

Click here to download 6900 Bendix pdf file
TO BUY 6900 (sub for 5687 and 7044)s

6907 Beam Power Tetrode / 6910 TO BUY 6907 TO BUY 6910
6922 / E88CC / CCa DUAL TRIODE TO BUY 6922 and CCa

6923=EA52 UHF Diode TO BUY 6923
6939 Beam Power Tetrode / 6953 TO BUY 6939 TO BUY 6953
6973 Beam Power Tube (6973: 12 watts max power output, high quality audio power tube, has less power sensitivity than 6BQ5, but less distortion) (6973: Vplate max=440V, Vscreen max=330V taken from RCA manual 1960) (Vfil=6.3V @ 450ma) (a 6CZ5 CANNOT be substituted for a 6973, 6CZ5: 10 watts max and Vplatemax=350V) - Magnatone 450A - Oahu White Gold 1624T (1959-1962) - Seeburg AY 160 with a sfha-4 amp 1961 - Valco/Gretsch Electromatic 1960 - Gretsch 6161 1960's - Supro - Counterpoint SA-5 (modded) - Rock-Ola Regis 1495 Jukebox 1961 - Fairchild - CR amps (UK) - Seeburg 220 Jukebox TO BUY 6973 RCA and SYLVANIA NOS pairs
7014=604 Mercury Gas Rectifier / 7015=604L TO BUY 7014 TO BUY 7015
7021 / 7022 TO BUY 7021 TO BUY 7021
7027 Pentode 1957 - 1970's TO BUY 7027 and 7027A

7034=4X150A Eimac / 7036 Pentagrid Amplifier TO BUY 7034 TO BUY 7036
7044 Medium-Mu Dual Triode (good audio tube, especially as a cathode follower, warm sound, specs similar to 7119, 7119 has same pinout, 7044 is a good sub for the 6900 Bendix, also see the 5687 page) (Filament=12.6V @ 450ma, Vplate=120V, Vgrid=-2V, Iplate=36ma, Mu=21, Gm=12,000, Rplate=1750 ohms) (Vplate max=300V, Pwatts max=4.5W per section) - Aikido preamp - Manley Mu compressor (also uses 6386) - Audio Note DAC output 7044 GE (2 on left) and Raytheon (2 on right, rebranded) - listed below TO BUY 7044
7044 GE: ------- 1 tube $25) 7044 GE NOS 1974
1 tube $25) 7044 Sylvania branded CEI NOS Comments in Manley preamp: ------------------------- The 7044 SYLVANIA, better bass, higher frequency extension with harshness mostly gone, noticeable improvement in dynamics, fuller and slightly warmer sounding (but not too warm)
7054=12BY7 (Also see 8077 and 12BY7, 7054 has mobile rated heater supply 13.5V +/- 1.5 volts) Full emission at 12.6 volt filament) TO BUY 7054

7056=6CB6 Sharp-Cutoff Pentode TO BUY 7056

7058=12AX7 High-Mu Dual Triode (11V-13.5V filament, filaments cannot be used at 6.3 volts) TO BUY 7058

7059=6U8 Triode / Pentode (7059=6U8 with a 12.6V filament) - Hallicrafters TO BUY 7059

7060=6AU8 Triode / Pentode TO BUY 7060

7061=12AB5 Beam Power Tube (7061 is a mobile rated 12AB5, 12.6V filament) TO BUY 7061

7062=E180CC Holland Dual Triode 1950's - 1960's (7062=Premium Grade 10,000 hour 12AV7, 6414 is near equivalent and 5965 is similar) - Experience Music DM70 amp - Aria WV5XL phono preamp Mike Elliott design 2008 - Eastern Electric Mini-Max - Conrad Johnson P45 amplifier 1980's - Exemplar - Berning TO BUY 7062=180CC PAIRS NOS
Holland 1957 "pinched top" D getter, Holland PQ 1960 D getter, Holland branded Nat. 1960 D getter, Miniwatt 1961, Mullard Holl. 1962, Beckman Holl. 1965, PQ orange label 1966 TO BUY 7062

7077 UHF Planar Trioode / 7094 Beam Tetrode / 7105 TO BUY 7077 TO BUY 7094 TO BUY 7105
7119=E182CC Dual Triode (Also see 7044, it has similar specs and is a cheaper substitute, same pinout) (7119 is not a direct replacement for a 12BH7A, but has similar specifications) (Also see 5687 and 6900) The 7119=E182CC is a medium mu, high perveance, twin triode. This tube features exceptional freedom from cathode interface, and is characterized by high zero-bias plate current. The 7119=E182CC is one of the "Premium Quality 10,000 Hour" tubes. TO BUY 7119=E182CC

7167=6CY5 Tetrode TO BUY 7167

7189/A Beam Pentode

(7189=uprated 6BQ5) TO BUY 7189 and 7189A


7193 VHF Triode (also see 2C22)

(plate and grid top caps, 6.3V @ 300ma, mu=20, electrically similar to 6J5GT) 1) JAN-7193 Ken Rad NOS 1940's in white box $8 1) 7193 Ken Rad tests like new 1940's in white box $6


7199 Triode / Pentode (the best sounding are RCA, Sylvania then GE) - Bogen BD-212 - Dynaco ST-70, SCA-35 - Ampeg B25, B25B - Heathkit AA-111 - Stromberg Carlson - Ampex Concerto 1961 - Scott LK 150 TO BUY 7199 RCA and SYLVANIA
SONIC COMMENTS: -------------- "I just installed a pair of Sylvania 7199s that I recently bought from TubeWorld. Man what a difference!!!!! It's like someone went through my Dynaco ST 70 with a Rotor Rooter!!!! There is detail flowing through that I was not even aware of. I will have to re-listen to my entire music collection. Thanks for making these wonderful tubes available. - Robert N."
7233 Regulator Triode / 7234 / 7235 - Allnic L-1500 linestage 6) 7233 used TO BUY 7234 TO BUY 7235 Victoreen 7236 Dual Power Triode (metal base) (7236=Computer rated 5998A) - Woo Audio WA 2 headphone amp - Woo Audio WA 3 headphone amp - Woo Audio WA 22 headphone amp - Darkvoice - Bottlehead OTL - Bottlehead Crack 7236 CETRON 1983 (these are built the same as Tungsol 7236 - Cetron purchased the 7236 tooling from Tungsol) TO BUY 7236 Cetron NOS

7236 SYLVANIA 1962-1963 - Bottlehead - Woo Audio WA2, WA3 - can be used in ATMA-SPHERE OTL amp with slight modification to bias resistor TO BUY 7236 Sylvania NOS
7236 Sylvania 1962-1963 7236 Tungsol 7239 TO BUY 7241 TO BUY 7242 TO BUY 7247=12DW7 Dual-Triode (7247=1 section is a 12AX7, 1 section is a 12AU7) TO BUY 7258 Triode/Pentode TO BUY 7289=3CX100A5 (similar to 2C39A Triode) Planar Pulse Triode TO BUY 7304 TO BUY 7315 Display Storage Tube TO BUY 7320 TO BUY 7322 Hydrogen Thyratron
7308 = E188CC DUAL TRIODE TO BUY 7308

7316=12AU7 Dual Triode (Also see 12AU7) (Premium 12AU7, one of the best sounding 12AU7 ever made, glorious midrange annd excellent vocal reproduction) Sonic Comments: -------------- "The first thing I noticed was how natural the human voice sounded. Not only do all the instruments sound more like themselves, but I can hear each instrument and voice more clearly separated on that proverbial soundstage. I will never ever be able to go back to "regular" tubes after hearing these." TO BUY 7316=12AU7 Dual Triode (Also see 12AU7)
TO BUY 7355 Beam Power Tube (similar to 7591A with octal base, 18 watts) TO BUY 7360 Sheet-Beam / Beam Deflection Tube TO BUY 7377/QQE04-5 Dual Transmitting UHF Tetrode TO BUY 7390 TO BUY 7408=Premium 6V6GT Power Tube (controls over zero-bias characteristics TO BUY 7410 Zenon Thyratron TO BUY 7475 TO BUY 7486 Planar Triode TO BUY 7521 Magnetron TO BUY 7534=E130L Pentode TO BUY 7543=6AU6 low hum TO BUY 7548 TO BUY 7551 Beam Power Tube (12-15V filament, otherwise same specs as 7558) TO BUY 7554 TO BUY 7558 Beam Power Tube (7558=7551 with 6.3V filament) TO BUY 7581A Beam Power Tube (Also see KT66 and 6L6GC, try a 7581A in place of a 6L6GC, 35 watts) (decent replacement to 6L6GC's in MAC's and in guitar amps)
7586 Nuvistor (Medium-Mu Triode, first one announced, for general industrial and UHF use) (Vfil: 6.3V @ 135ma, Mu=35, Gm=11500, Pout=1W) (Could give 650mW output at 160Mhz from B+ of 120V) (Variants: 7895, 8056, 8393) - AKG C12A microphone TO BUY 7586 Nuvistor TO BUY 7587 Nuvistor TO BUY 7591 and 7591A Beam Power Tube (these old USA made 7591/A sound dramatically better than the newer types made in Russia)
TO BUY 7609 Power Tetrode
7643=E80CF Triode/Pentode (similar to 6BL8) (the 7643 is the best sounding 6BL8 substitute you can buy) (see 6BL8 page for pictures) - McIntosh MR-67 tuner TO BUY 7643 Amperex
7687 Triode / Pentode (low hum and microphonics, good substitute for 6GH8A in Dynaco ST-70, mu=18, Gm=5800) (highly recommended as sub for 6GH8A or 6U8A) - Scott 299A TO BUY 7687

TO BUY 7693=E90F=6BH6 Pentode TO BUY 7694=6BJ6 TO BUY 7695 Audio Power Tube TO BUY 7699 TO BUY 7701 Power Tube TO BUY 7716 triode/pentode TO BUY 7717=6CY5 TO BUY 7719 TO BUY 7728=12AT7 Instrument Grade TO BUY 7729=12AX7 Instrument Grade TO BUY 7730=12AU7 Instrument Grade Dual Triode TO BUY 7761 TO BUY 7768
7788=E810F Pentode (Holland and USA) (Frame-Grid 10,000-hour low-noise Pentode, Filament=6.3V @ 340ma) - Allnic H-3000 phono - Allnic L-1500 linestage - Allnic L-3000 TO BUY 7788=E810F

TO BUY 7802WA Dual Triode TO BUY 7807 TO BUY 7815 Planar Triode (7815=similar to 2C39 w/o radiator) TO BUY 7867 Beam Power Tube TO BUY 7868 Power Amp Pentode (7868=Novar pin variant of 7591A) TO BUY 7895 Nuvistor (7895 is a high-mu triode; a 7586 with a Mu raised from 35 to 64, Gm=9400) TO BUY 7905 Beam Power Tube TO BUY 7965 TO BUY 7977=B-4032 Burroughs Digital Readout TO BUY B-4031 Burroughs TO BUY 7984 Beam Power Tube TO BUY 7995 Pentode (miniature) TO BUY 8000 Power Triode (8000=810 with lower Mu) TO BUY 8003 TO BUY 8008 TO BUY 8005 Power Triode (8005 is a 203A with a top cap, 75 watts, similar to a 75TH) (MI-200 McIntosh Monoblocks) TO BUY 8012=VT-228 Transmitting Triode TO BUY 8013A
TO BUY 8020 and 8020W Rectifier TO BUY 8025 RCA Triode (8025=8012 with UX base and grid/plate caps come out side of tube) TO BUY 8032=8552 Beam Power Tube TO BUY 8037B-5031 nixie tube TO BUY 8045G NEC, Nippon Electric Co. Ltd.; Tokyo (Triode) TO BUY 8056 Nuvistor 8068 Beam Pentode Power Designs Inc. 1570 TO BUY 8068 and 8068K TO BUY 8068 and 8068K TO BUY 8068
TO BUY 8070 (subminiature high-mu triode) TO BUY 8072 RCA TO BUY 8077=7054 (8077 has shorter bulb than 7054, mobile-rated) TO BUY 8084 TO BUY 8102 TO BUY 8106 TO BUY 8122 (8122 is uprated to 400W verus 150W for 8121) TO BUY 8136 TO BUY 8156 Beam Pentode-Compactron TO BUY 8167=4CX300A TO BUY 8172=4X150G 8223=E288CC Medium-Mu Dual Triode (E288CC=European 7308, higher transconductance, rare type and recommended) (E288CC has higher filament current (475ma) than a 6DJ8 (365ma) or 6922/7308 (300ma) (Specs: Vplate=100V, Vgrid=-2.5V, Iplate=20ma, Gm=33,000, Mu=50, Rplate=1500 ohms, Pwatts=2W) TO BUY E288CC=8223 TO BUY 8233=E55L Power Pentode (Magnoval Base)(ALLNIC PREAMP) TO BUY 8236 (Clegg Apollo Six Linear and Hallicrafters SR-500) TO BUY 8245 TO BUY 8252=4PR60B Radar Beam Tetrode (replaces 715C and 5D21) TO BUY 8298=6146B TO BUY 8322=DX362=4CX350F Power Tetrode TO BUY 8370 Hydrogen Thyratron TO BUY 8416 Amperex PQ Dual Triode (VAC Renaissance linestage) TO BUY 8417 TO BUY 8421=B-5092 Burroughs Nixie Tube TO BUY 8423=B-6091 Burroughs Nixie Tube TO BUY 8445 TO BUY 8447 TO BUY 8448 TO BUY 8453=ZM1050 (0-9 Readout) TO BUY 8458=YL1240 TO BUY 8509 TO BUY 8458 Twin Tetrode TO BUY 8463 TO BUY 8509 Dual Tetrode (8509=5894 with quick-heating "harp" filament) TO BUY 8532=6J4 Triode TO BUY 8533TA (Planar Pulse Triode, looks the same as a 7289, 8533 is similar to 2C39) TO BUY 8552=8032A=6883B Beam Power Tube TO BUY 8556=EC8010 UHF Triode (Siemens) TO BUY 8560AS Transmitting UHF Cermet Tetrode TO BUY 8562=E88C TO BUY 8580 TO BUY 8608 TO BUY 8643 TO BUY 8745=7815R TO BUY 8844 RCA Vidicon
TO BUY 8874=3CX400A7 TO BUY 8875 TO BUY 8877=3CX1500A7 (VHF Triode) TO BUY 8906 Planar Cermet Transmitting Triode TO BUY 8906 Transmitting Pentode TO BUY 8945 TO BUY 8950 Pentode-Compactron (Swan) TO BUY 8965 Eimac Xmtg Triode TO BUY 8975 TO BUY 9001 Pentode 9002 VHF Triode / 9003=VT-203 VHF Pentode 9002: James Millen 90651 is a compact and completely self contained grid-dip meter. Transformer type AC supply. Drum dial has seven bands, calibrated from 1.5 thru 300MHz, with generous overlaps. TO BUY 9002 TO BUY 9003 TO BUY 9004 Acorn Diode TO BUY 9005 Acorn Diode TO BUY 9006 Acorn UHF Diode (Gonset Comm 2, Gonset gsb-100 3233 1960)
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