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 Tube - 5879, Pentode, Sharp Cut-Off
Sharp-cutoff pentode of the 9-pin miniature type intended for use as an audio amplifier in applications requiring reduced microphonics, leakage noise, and hum.
$12.90
Vacuum Tube - 12AX7 / ECC83-Cz, Tube Amp Doctor, Premium Selected
The Tube Amp Doctor premium selected 12AX7 / ECC83-Cz features big, warm, clean sounds with a mellow top-end when pushed to overdrive. It’s a great choice for guitar amps and HiFi alike. The ECC83-Cz is recommended if you want to emphasize punchy mids and is especially great when pushed into a fat overdrive. The TAD™ ECC83-Cz is a miniature, high-mu twin triode with good gain, round deep bass, somewhat compressed mids and very smooth top end. Selected and recommended for guitar amps to smoothen up the tone or for HiFi to shape the body of sound more to “that” tube tone. Best for jazzy and thick clean as well as for vintage bass response. Recommended for all positions in amps with medium gain level or High-Gain Amps for V2+ positions. As for V1 in general but especially for higher gain amps or phono/audio-amps, we recommend the RT030 7025/E83CC Highgrade, T-7025-HG-TAD.
$24.95
Vacuum Tube - 12BH7-A, JJ Electronics
The JJ Electronic 12BH7-A is a faithful reproduction of the original tube. Its rugged construction offers high reliability. The JJ 12BH7-A can be used as a replacement for any 12BH7 tube.
$24.95
Vacuum Tube - 5881, JJ Electronics
The JJ Electronic 5881 is very similar to the 6L6GC but with a plate dissipation of 23W rather than 30W. Another physical difference is the shorter bulb. These tubes have a soft and balanced response that sounds great in both guitar amps and hifi equipment. The JJ 5881 will work in any amp that uses 6L6 tubes.
Starting at $25.50
Vacuum Tube - EF806 / EF86 / 6267, JJ Electronics, Long Plate
The JJ Electronic EF806S is a high quality reproduction of the classic EF86. This pentode features a robust construction with the internal shielding used in the original tubes. The JJ EF806 can be used in any EF86 circuit including microphones and amplifiers.
Starting at $43.25
Vacuum Tube - 7025 / E83CC, Tube Amp Doctor, Premium Selected
The Tube Amp Doctor 7025 / E83CC Highgrade is the premium selection of the RT003 ECC83-Cz for V1 positions. This tube works exceptionally well in the V1 position of high gain amps, combo amps, and phono/audio-amps. The Tube Amp Doctor 7025 / E83CC Highgrade is a miniature, high-mu twin triode with good gain, round deep bass, somewhat compressed mids and very smooth top end. Selected and recommended for guitar amps to smoothen up the tone or for HiFi to shape the body of sound more to “that” tube tone. Best for jazzy and thick clean as well as for vintage bass response. The TAD™ 7025 / E83CC Highgrade can replace any 7025, 12AX7WA, 12AX7WB, 12AX7LPS, 12AX7EH, ECC83 or E83CC.
$31.50
Vacuum Tube - 6922 / E88CC, JJ Electronics
The JJ Electronic E88CC / 6922 is a great replacement for any 6922, 6DJ8, or E88CC tube. JJ implements a solid construction that those familiar with their preamp tubes will find familiar. This tube’s high end clarity and warm smooth mids make the JJ E88CC and excellent choice for Hi-Fi preamps and amplifiers.
Starting at $25.75
Vacuum Tube - ECC802 / 12AU7, JJ Electronics, Long Plate
A high performance, long plate version of the ECC82 / 12AU7. Like all JJ preamp tubes, these are built into a rugged package using the spiral filament and robust plate structure resulting in low microphonics and high reliability. The long plate version of this tube differs from the standard version with its stronger and fuller sound which offers a wider and more balanced frequency response.
Starting at $22.95
Vacuum Tube - 6AQ5A / 6HG5, Tetrode, Beam Power
Miniature beam-power pentode designed for use in the audio-frequency power output stage of television and radio receivers. It may also be used as a triode-connected vertical deflection amplifier in television receivers.
$9.90
Vacuum Tube - KT88, JJ Electronics
A sonically faithful reproduction of the original tubes with a robust construction encased in a thick glass envelope. The JJ KT88 delivers a powerful 42 Watts with plenty of headroom to spare. This tube has a tone that is warm and lively with a detailed and balance response. The JJ KT88 is an excellent choice for Hi-Fi stereo equipment as well as guitar amplifiers. It can be used in place of 6550 tubes.
Starting at $59.95
Vacuum Tube - 6V6GT-STR, Redbase, Tube Amp Doctor
The TAD 6V6GT-STR Redbase combines the tonal characteristics of an NOS 6V6GT such as from RCA or GE with the current requirements. It is a heavy duty 6V6GT tube, which can handle a higher plate voltage than regular 6V6GT tubes. The TAD 6V6GT-STR Redbase shines with the typical NOS "sweet top end" and at the same time a strikingly dense and complex midrange. Especially with this midrange characteristic they achieve a liveliness in tone that only NOS 6V6GT achieve and otherwise remains unmatched. Even when pushed into saturation there are no harsh upper mids, which is frequently the case with other 6V6s. Sweet full-bodied tone with silky highs. Tube Amp Doctor recommends the TAD 6V6GT-STR Redbase for all 6V6 power amps when a full yet freely defined tone is desired. The ideal tube for Fender Deluxe Tweed 5E3 or Blackface Princeton Reverb amps, single ended Class A amps like the Fender Tweed Champ, Vibro Champ, Fender Champion 600 or the Univalve.
Starting at $34.95
Vacuum Tube - 6CA7, JJ Electronics
A true to form reproduction of a classic tube that will work in most EL34 amps. The 6CA7 is often considered the American cousin to the British EL34. Sonically, this tube is closer to a 6L6 than an EL34 but without the sometimes harsh high end of the 6L6.
Starting at $25.95
Vacuum Tube - 6CA4 / EZ81, JJ Electronics
The JJ Electronic EZ81 is a noval based rectifier with a rugged construction. These tubes are an excellent choice for guitar amps such as 18W Marshalls and Hi-Fi amplifiers as well. This tube will work in any EZ81 or 6CA4 application.
$18.50
Vacuum Tube - 5AR4, Sovtek
Octal rectifier tube (Max DC output current = 250 mA)
$29.80
Vacuum Tube - 6SN7, JJ Electronics
The JJ Electronic 6SN7 is the classic double triode with a rugged construction the offers the high reliability that JJ is known for. The JJ 6SN7 features the outstanding linearity and sound of the original tubes. This tube is an excellent replacement for Hi-Fi amplifiers and preamps and will replace any 6SN7, 6SN7GTA, 6SN7GTB, or 6SN7GT.
$26.95
Vacuum Tube - 7025, Electro-Harmonix
Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the tube to be designated 7025.
$27.95
Vacuum Tube - 12AT7 / ECC81, Electro-Harmonix
Electro-Harmonix 12AT7 / ECC81 Vacuum Tube Large plate format, superior dissipation over the originals. Perfect for reverb and driver circuits.
$21.65
Vacuum Tube - 12AT7 / ECC81-Cz, Tube Amp Doctor, Premium Selected
The TAD ECC81 / 12AT7-Cz is selected with regards to a tight balance of both triodes making it ideal for the use as a balanced phase inverter. In addition to the perfect symmetrical systems, the strong amplification characteristics of the TAD ECC81 / 12AT7-Cz support increased dynamics of the output stage when used as phase driver or phase inverter tube. Q: When does a power tube become a Premium Selected power tube? A: All power tubes labeled Premium Selected have passed the following tests:
  • Plate Current (PC) and Amplification (TC)
  • Low Noise Test
  • Microphonic Test
  • Sonic Tests
  • Shock Tests
  • Listening Tests
  • Shorts & Leakage Tests
$26.45
Vacuum Tube - 6SK7, Pentode, Remote Cut-Off, RF
Remote-cutoff pentode. It is designed for use as a high-gain radio-frequency or intermediate-frequency amplifier in a radio receiver.
$6.90
Vacuum Tube - 12AU7A / ECC82, Electro-Harmonix
Superior medium-Mu Twin Triode for use in preamplifier and driver circuits. Standard replacement for all circuits requiring 12AU7/ECC82 types.
Starting at $21.65
Vacuum Tube - 6L6WGC-STR, Redbase, Tube Amp Doctor
The Classic Sound of the 1950s and 60s - Excellent Tone, Maximum Lifetime! The TAD 6L6WGC-STR Redbase is the perfect choice for vintage tweed and blackface amps such as the 1960s Bassman, Twin, Showman or Super Reverb. The complex midrange and sweet heights are a class of its own. The TAD 6L6WGC-STR Redbase is recommended for classic tone with warm cleans and rich, sweet mids when pushed. Great for fat jazz or blues tones and our favorite in all open back combo amplifiers. The TAD 6L6WGC-STR is a remake of the small bottle clear-top GE6L6GC and has the same warm lower midrange and silky top end as the classic GE versions of the 1950s and 60s. Like the historic RCA 5881, this tube features a small bottle enclosure, clear top and side getter. The TAD 6L6GCM-STR and the TAD 6L6WGC-STR have our exclusive beefed up cathode coating, gold grid wire, double getter construction, no-noise filaments and 1.2mm thick heavy duty glass.
Starting at $37.80
Vacuum Tube - 5AR4 STR, Tube Amp Doctor
Tube Amp Doctor 5AR4 Rectifier, Premium Selected. A faithful reproduction of the Mullard/VALVO GZ34. Pure power and the typical sag is the distinguishing characteristic of the most popular guitar amps of the 1960s guitar heroes till today.
$34.95
Solid State Rectifier - Yellow Jacket® YJR, For 5AR4, 5U4, 5Y3
The YJR is a direct plug-in replacement adapter for use in most amplifiers that use 5AR4/GZ34, 5U4, 5Y3 or similar full-wave rectifier tubes. The YJR converts your amp's vacuum tube rectifier to a solid state rectifier, reducing tube sag for a tighter sound and feel.
$14.95
Vacuum Tube - 6X4 / EZ90, Rectifier, Full Wave
Miniature heater-cathode type twin diode designed for full-wave rectifier operation in compact power supplies. The tube is intended for service in automobile and a-c radio receivers.
$12.95