Vacuum Tubes

Beam power amplifier tetrode designed for use in the output stage of radio receivers or other equipment requiring high power output, power sensitivity and efficiency.

Triode, high mu

Compactron beam-power pentode primarily designed for use as the horizontal-deflection amplifier in color television receivers. It is characterized by having a very low knee with a very high peak current of over an ampere.

Miniature, medium-mu twin triode designed primarily for use as a vertical-deflection amplifier in television receivers. The two sections may be employed in parallel, or as a combined vertical-deflection amplifier and vertical oscillator.

Pentagrid converter designed for service as a combined oscillator and mixer in AC, storage battery, and AC-DC operated receivers

High vacuum rectifier intended for use in full-wave applications. The tube incorporates an indirectly heated cathode which is internally connected to the heater

High perveance beam power pentode in a T-12 glass envelope. It is designed especially for use as a horizontal-deflection amplifier in color television receivers. The 6CB5A is unilaterally interchangeable with the 6CB5.

Pentagrid converter

Ruggedized heater-cathode type double diode using the 9 pin miniature construction. It is suitable for use in half or full wave rectifier applications or as a voltage doubler.

Octal rectifier tube (Max DC output current = 250 mA)

Filamentary twin-diode designed for full-wave rectifier operation in power supplies that have D-C output current requirements up to approximately 125 milliamperes.

Full-wave vacuum rectifier.

Electro-Harmonix 12AT7WC dual triode preamp tube. Made in Russia. “Xtra Low Microphonic”. Small plate format dual triode, with low microphonics and superior dissipation compared to NOS originals. Ideal for reverb circuits.

High frequency twin triode preamplifier tube used in studio and hi-fi equipment.

The Svetlana 12AX7 is a premium 12AX7 tube from Russia. Known for their smooth drive and clarity, these tubes are praised by both guitar players and HiFi users alike. The Svetlana 12AX7 is compatible in any 12AX7 or ECC83 position. “Svetlana tubes are quite simply the absolute best. We design and manufacture our tubes, engineered for demanding high fidelity, reliability and overall warmth. Be sure to insist on genuine Svetlana vacuum tubes the next time you retube -- you'll be getting the absolute best possible tubes for any demanding application.” -Svetlana

Alternative to the 12AX7 or ECC83. The JJ Electronic E83CC is a high quality dual triode that rivals the NOS version of this tube. The E83CC was originally designed as an audio specific dual triode with very low noise and microphonics. The JJ E83CC stays true to the original design with the signature thick frame grid and boxed plate. The rigid frame allows for tighter tolerances and closer construction which results in lower noise and increased stability. The JJ Electronic E83CC is a great choice for high fidelity amplifiers as well as guitar amps and studio equipment. The E83CC has the same pinout and amplification factor as a standard 12AX7 and can be used in any 12AX7 or ECC83 position. Guitarist Description: This frame grid tube has an incredibly rich yet balanced tone. The E83CC works well for clean sounds but also breaks up with a satisfying warmth and plenty of articulation.

General purpose triode designed for service as an oscillator, detector, or amplifier

Sovtek 12AX7WC dual triode preamp tube. Made in Russia.

Sovtek 6SL7GT vacuum tube, made in Russia.

The Tube Amp Doctor 5Y3GT / 6087 is a small bottle rectifier designed to perform closely to the original rectifier tubes used in many 1950s tweed amplifiers. This rectifier offers high reliability due to its rugged construction and the Tube Amp Doctor Premium Selection process. The TAD 5Y3GT is a great tube for vintage style sag compression.

Electro-Harmonix 6CA4 full-wave rectifier tube. Made in Russia.

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.

Low-noise Tube for Best Clean Tone! The TAD Selected 5751 is Tube Amp Doctor's first choice for noticeably improved clarity, smoothness, and a true vintage tone character for most guitar amps!

The all-new designed TAD 12AX7 / ECC83 Redbase is a miniature, high-mu twin triode with very good gain. These tubes are selected and recommended for guitar amps to improve overall responsiveness and dynamics. Because of its cathode-to-heater voltage-withstand capability, this tube works perfectly as a cathode follower. Best for thick, clean tones as well as for those modern preamps where a deep low end is required as well as for sounds requiring fat midrange, detailed airy top end and lots of power from the preamp. Recommended for all positions in medium gain amps or for V2+ positions in high-gain amps. For V1 in general but especially for high-gain amps or phono/audio-amps, we recommend the new 7025 / E83CC Redbase Highgrade T-7025-RB-TAD.