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.

Solid State Replacements

Solid state replacements for vacuum tubes are great for use for hard to find or costly vacuum tubes and for reducing 'sag' in power supply applications.
Vacuum Tube - 5AR4 / GZ34, JJ Electronics
The JJ Electronic GZ34 / 5AR4 is rugged rectifier at a reasonable price. JJ has a reputation for building sturdy tubes and this one is no exception. Users report that the JJ GZ34 / 5AR4 is a reliable rectifier in their Vox, Fender, and hifi amplifiers.
$15.95 Vacuum Tube - 5Y3 S, JJ Electronics, Rectifier The JJ Electronic 5Y3S is a ruggedly built octal rectifier tube with a directly heated cathode. This tube’s solid construction and thick glass envelope offer high reliability. The JJ 5Y3S will work in any 5Y3 position.$15.50
Vacuum Tube - 5U4GB, JJ Electronics
The JJ Electronic 5U4GB is an excellent choice for an economically priced tube rectifier. Used in many Hi-Fi and guitar amplifiers, JJ delivers a robust and solidly built tube. This full wave rectifier will work in any 5U4 application.
$14.95 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.$12.50
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.
$27.90 Vacuum Tube - 5Y3GT, Tube Amp Doctor, Premium Selected, Rectifier 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.$16.65
Vacuum Tube - 5AR4, Sovtek
Octal rectifier tube (Max DC output current = 250 mA)
$21.75 Vacuum Tube - 5U4GB, Electro-Harmonix Superior directly heated rectifier Diode. Replacement for all 5U4 types, including NOS-style "big bottle" tubes.$15.50
Solid State Rectifier - Yellow Jackets® 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. The tube rectifier can easily be swapped back in when sag is desired. This Yellow Jacket® is a solid state device and as such does not come with vacuum tubes.
• Converts most audio amplifiers which use a vacuum tube rectifier 5AR4/GZ34, 5U4 or 5Y3 to a solid state device.
• Safe for all common amplifiers and transformers.

All Yellow Jackets® have a one year warranty against manufacturer defects.
$14.95 Vacuum Tube - 5Y3GT, Sovtek Octal rectifier tube (Max DC output current = 125 mA) An indirectly heated diode intended for rectification of commercial-frequency alternating current. It has a 140 mA maximum output and filament voltage of 5 V and a filament current of 2 A ± 0.2 mA.$17.50
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 Vacuum Tube - 35W4, Rectifier, Half Wave Miniature half-wave rectifier for use in line-operated equipment having series-connected heaters. The heater is tapped to permit operation of a panel lamp.$7.90
Vacuum Tube - 12BE6 / HK90, Heptode
Miniature pentagrid converter designed to perform simultaneously the combined functions of the mixer and oscillator in superheterodyne receivers. The tube is suitable for use in the standard broadcast and FM bands.
$7.90 Vacuum Tube - 5AR4, Tung-Sol Reissue Tung Sol 5AR4 rectifier tube. Made in Russia. Premium directly heated heavy duty rectifier Diode. Helps extend the life of the other valves in the amplifier by allowing them to heat up before plate voltage is applied. Tung-Sol tubes reflect the best in vintage construction with unsurpassed tone and reliability. • Low internal voltage drop & controlled heater warm up time • Excellent choice for both Hifi and instrument amplification • Replacement/upgrade for all 5AR4/GZ34 types$34.85
Vacuum Tube - 6BE6 / EK90, Heptode
Miniature heptode primarily designed to perform the combined functions of the mixer and oscillator in superheterodyne circuits in both the standard broadcast and FM bands.
$6.90 Vacuum Tube - 6X5GT / EZ35, Rectifier, Full Wave Cathode type rectifier designed particularly for use in automobile receivers.$12.90
Solid State Rectifier - For 5AR4, 5U4, 5Y3 Tubes
Solid State Rectifier Direct plug-in replacement for 5AR4, 5U4 and 5Y3 rectifier vacuum tubes in amplifiers with center tapped secondary power transformer. Use when less 'sag' is desired in the power supply; just switch back to the tube rectifier when 'sag' is desired.
$9.95 Vacuum Tube - 35Z5GT, Rectifier, Half Wave Heater-cathode type diode designed for use as a half-wave rectifier in ac/dc receivers. A heater tap is provided to permit operation with a panel lamp.$23.90
Vacuum Tube - GZ34 / 5AR4, Mullard Reissue
Premium directly heated heavy duty rectifier Diode. Re-issue of the most popular rectifier valve ever built by Mullard. Helps extend the life of the other valves in the amplifier by allowing them to heat up before plate voltage is applied.
• Low internal voltage drop & controlled heater warm up time
• Excellent choice for both Hifi and instrument amplification
• Replacement/upgrade for all 5AR4/GZ34 types
$39.50 Vacuum Tube - 12SA7, Heptode Pentagrid converter designed to minimize frequency drift. They are intended for service as combined oscillators and mixers in AC, storage battery, and AC/DC operated superheterodynes.$8.90
Vacuum Tube - 5AR4, Chinese
Chinese 5AR4 Vacuum Tube
$18.54 Vacuum Tube - 6SA7, Heptode Metal pentagrid converter. It is intended to perform the combined functions of the mixer and oscillator in superheterodyne receivers, especially those of the all-wave type. The 6SA7 is constructed to provide excellent frequency stability.$3.90
Vacuum Tube - 1R5 / DK91, Heptode
Miniature pentagrid-converter designed for use as a combined mixer and oscillator in superheterodyne circuits. Because of its small size and high operating efficiency, the 1R5 is especially adapted for compact, battery-operated equipment.
$5.90 Vacuum Tube - RCA 5Y3GT, Rectifier, Full Wave Also known by US military identifier VT-197A. The 5Y3GT is a filamentary twin-diode designed for full-wave rectifier operation in power supplies that have d-c output current requirements up to approximately 125 milliamperes. RCA brand.$34.90
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