Vacuum Tubes

The first electronic amplification of sound was done with Vacuum Tubes. We have pre-amp, power and rectifier vacuum tubes among other types in New Old Stock from the golden era of American & European manufacturing as well as current production tubes from today.

Vacuum Tubes

The first electronic amplification of sound was done with Vacuum Tubes. We have pre-amp, power and rectifier vacuum tubes among other types in New Old Stock from the golden era of American & European manufacturing as well as current production tubes from today.
T-6V6GT-MUL Vacuum Tube - 6V6GT, Mullard Reissue
Mullard 6V6GT tube. Made in Russia. This valve is built to stand the high voltages encountered in the Fender Deluxe Reverb and other guitar amplifiers that ran the valves above the published specification. The smooth and balanced frequency response also makes it suitable for hi-fi use.
Starting at $22.21
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Originally: $24.95
T-7591A-TUNG Vacuum Tube - 7591A, Tung-Sol Reissue
Tung Sol 7591A beam-power tube. Made in Russia.
Starting at $28.44
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Originally: $31.95
T-EF806S-GOLD-TUNG Vacuum Tube - EF806S, Tung-Sol Reissue, Gold Pin
Tung Sol EF806 SG pentode preamp tube with gold pins. Made in Russia. Super premium EF86/6267 replacement based on the Telefunken EF806S. Super low noise and microphonics. Gold pins.
$26.66
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Originally: $29.95
T-EL84M-SOVT Vacuum Tube - EL84M, Sovtek
Sovtek EL84M / 6BQ5WA power pentode. Made in Russia.
Starting at $18.29
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Originally: $20.55
T-KT88-MUL Vacuum Tube - KT88, Mullard Reissue
Premium Octal beam Tetrode, an exact copy of the KT88 valve manufactured by Marconi-Osram for Marshall in the late 1960s and 70s. Powerful, balanced and detailed soundstage with full bass.
  • Direct replacement for any 6550 types
  • Excellent replacement output valve for the Marshall Major, retains the original sound
  • Equally well suited for hifi
Starting at $39.12
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Originally: $43.95
T-KT120-TUNG Vacuum Tube - KT120, Tung-Sol Reissue
Super-premium Octal Beam Tetrode, impervious to overload when used at parameters found in existing 6550/KT88/KT90 circuits. Plate dissipation of 60 watts and higher current handling capacity has allowed the design of new amplifiers which are unique, extremely powerful and stable.
  • Delivers peak power with extreme reliability and long tube life
  • A pair of KT120s in push-pull configuration can deliver power levels of 150 or more watts
  • Plug & play in any 6550/KT88/KT90 circuit
Starting at $42.68
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Originally: $47.95
T-2A3-GOLD-EH Vacuum Tube - 2A3, Electro-Harmonix, Gold Pin
Electro-Harmonix 2A3 power triode tube with gold pins. Made in Russia. Gold plated grid.
Starting at $60.12
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Originally: $67.55
T-6BM8-EH Vacuum Tube - 6BM8, Electro-Harmonix
Electro-Harmonix 6BM8 triode pentode tube. Made in Russia.
Contains one preamp triode and one power pentode in a 9 pin miniature package.
$19.36
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Originally: $21.75
T-6SN7-EH Vacuum Tube - 6SN7, Electro-Harmonix
Electro-Harmonix 6SN7 medium-mu twin triode preamp tube. Made in Russia. New low noise HiFi 6SN7.
Starting at $17.36
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Originally: $19.50
T-6V6GT-GEN Vacuum Tube - 6V6GT / CV-511, Genalex Gold Lion
Genalex Gold Lion 6V6GT / CV511 beam-power tube. Made in Russia.
Starting at $28.44
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Originally: $31.95
T-12AT7-GOLD-GEN Vacuum Tube - 12AT7 / B739, Genalex Gold Lion, Gold Pin
Genalex Gold Lion ECC81/B739 (12AT7) dual triode preamp tube with gold pins. Made in Russia. Original Genalex Gold Lion ECC81/B739 tubes are considered the best 12AT7 types ever made. They are also among the rarest types available. They exhibit a large detailed soundstage that is characterized by an expressive midrange, deep tight bass, and a smooth extended high end. The reissue Genalex Gold Lion ECC81/B739 recreates the sound signature of the original. This tube features balanced sections and gold plated pins.
$38.23
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Originally: $42.95
T-12AU7-GOLD-GEN Vacuum Tube - 12AU7 / B749, Genalex Gold Lion, Gold Pin
Genalex Gold Lion ECC82/B749 (12AU7) dual triode preamp tube with gold pins. Made in Russia. The original Genalex Gold Lion ECC82/B749 is one of the most rare 12AU7 types ever made. This tube featured superb linearity, balanced sections, and extremely low noise. The reissue Genalex Gold Lion ECC82/B749 features gold plated pins and has been carefully engineered to recreate all of the attributes of the original. This tube is a premium replacement for all 12AU7, ECC82, 5814, and 6189 types.
$39.83
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Originally: $44.75
T-300B-GOLD-EH Vacuum Tube - 300B, Electro-Harmonix, Gold Pin
Electro-Harmonix 300B power triode tube with gold pins. Made in Russia. Premium version of the 300B EH with gold grid wire for increased bias stability as well as top of the line sonics and performance.
Starting at $88.96
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Originally: $99.95
T-6922-GOLD-GEN Vacuum Tube - 6922, Genalex Gold Lion, Gold Pin
Genalex Gold Lion E88CC/6922 dual triode preamp tube with gold pins. Made in Russia. The Genalex Gold Lion E88CC/6922 is a premium grade selected small signal twin-triode that is a suitable replacement for all 6DJ8, ECC88, 6922, E88CC, and 7308 types. This tube features gold plated pins and is manufactured to extremely tight specifications, making it the highest quality current production E88CC/6922 available.
$40.01
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Originally: $44.95
T-EL84-GEN Vacuum Tube - EL84 / N709, Genalex Gold Lion
Super Premium power pentode, highest quality in current production. Perfect for Vox AC30, from soft overdrive and organic sustain to great harmonic crunch. Used in many vintage HiFi applications.
  • Unique single halo type getter & plate coating
  • N709/6BQ5 equivalent
Starting at $23.54
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Originally: $26.45
T-KT66-GEN Vacuum Tube - KT66, Genalex Gold Lion
Super Premium power beam tetrode & exact copy of the original clear glass KT66, used in the early Marshall amps which created Eric Clapton’s "Bluesbreaker" Tone.” Full sound with improved bass response and shimmering top-end.
  • Originally a British equivalent to 6L6 and a mainstay of the British hi-fi industry
  • Used in 50s - 60s hi-fi favorites such as the Heath W-5M and many Leak amplifiers
Starting at $36.45
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Originally: $40.95
T-KT77-GEN Vacuum Tube - KT77, Genalex Gold Lion
Genalex Gold Lion KT77 beam-power tetrode tube. Made in Russia.
A beam tetrode with an absolute maximum anode dissipation rating of 32 watts. The KT77 is designed for use in the output stage of an af amplifier. Two valves in Class AB1 give a continuous output of over 70 W.
Starting at $43.57
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Originally: $48.95
T-KT88-GEN Vacuum Tube - KT88, Genalex Gold Lion
KT88 power tube reissue of Genalex Gold Lion. Made in Russia.
In 1957 Marconi-Osram Valve Co. (Genalex) introduced the "King of Power Tubes", the legendary Gold Lion KT88. This tube became the heart and soul of such classics as the Dynaco Mark III, McIntosh MC275, and Marshall Major. Unfortunately, Genalex ceased tube production in the early 1980s and the Genalex Gold Lion KT88 has become very expensive and hard to find.
After extensive research and engineering, New Sensor Corp. has reissued the famed Genalex Gold Lion KT88.
Starting at $52.07
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Originally: $58.50
T-KT90-EH Vacuum Tube - KT90, Electro-Harmonix
Electro-Harmonix KT90 power tube. Made in Russia.
Absolutely the best KT90 ever developed. Wafer base height of 0.34”.
Starting at $42.68
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Originally: $47.95
T-PX300B-GOLD-GEN Vacuum Tube - PX300B, Genalex Gold Lion, Gold Pin
Genalex Gold Lion PX300B power triode tube with gold pins. Made in Russia. In Europe during the 1930s the GEC (Genalex)/Marconi-Osram PX4 and PX25 power triodes were considered the finest audio triodes of their day. In keeping with the tradition of Genalex to provide the highest quality tubes, New Sensor has released the Genalex Gold Lion PX300B audio power triode. This tube is the highest quality 300B type available and is considered to be an upgrade in any 300B amplifier.
Starting at $128.12
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Originally: $143.95
T-6H30PI-GOLD-EH Vacuum Tube - 6H30PI, Electro-Harmonix, Gold Pin
Sovtek 6H30PI dual triode preamp tube with gold pins. Made in Russia. The 6H30 is a medium-mu dual triode with a very high-perveance cathode. The low plate resistance, combined with a superior linearity, and a true 4 watt per plate dissipation, make for a high performance voltage amp or driver.
$31.11
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Originally: $34.95
T-6AG7_6AK7 Vacuum Tube - 6AG7 / 6AK7, Pentode, Power
Metal, power-amplifier pentode primarily designed for use in the output stage of video amplifiers. The tube is capable of operating at high plate current levels and exhibits high transconductance and high power sensitivity.
$7.03
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Originally: $7.90
T-7581A-TUNG Vacuum Tube - 7581A, Tung-Sol Reissue
Rated for more power than the standard 7581 (35W plate dissipation vs 30W plate dissipation).
Starting at $25.77
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Originally: $28.95
T-6550A-STR-TAD-X Vacuum Tube - 6550A-STR, Tube Amp Doctor, Premium Selected
The Tube Amp Doctor 6550A-STR is built and performs to the same standards as the highly sought after GE 6550A. TAD has meticulously designed the plate material to be as strong and pure as possible resulting in an exceptionally stable, consistent, and reliable 6550. The TAD 6550A features a thick straight glass envelope, a metal base, and an authentic triple getter. The frequency response of this tube is remarkably balanced and smooth. Transparent natural lows and thick rich mids with silky highs make this an excellent tube for HiFi equipment as well as classic bass guitar amplifiers. The Tube Amp Doctor 6550A-STR offers outstanding performance in all applications. This tube is matched for both plate current and transconductance. The TAD 6550A-STR also passes all of the tests required in the Premium Selection process.
Starting at $39.12
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Originally: $43.95
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