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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.

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P-YJR
P-YJR
Item ID: 003636
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
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T-0A2_150C2
Item ID: 004416
Vacuum Tube - 0A2/150C2, Voltage Regulator, Diode, Glow-Discharge
0A2 or 150C2 - Voltage Regulator, Diode, miniature glow-discharge type.
$6.90
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T-0A3_VR75
Item ID: 004417
Vacuum Tube - 0A3 / VR75, Voltage Regulator, Diode, Glow-Discharge
Voltage Regulator, Diode, Glow-Discharge type.
$6.90
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T-0B2
Item ID: 004418
Vacuum Tube - 0B2, Voltage Regulator, Diode, Glow-Discharge
The 0B2 is a two-electrode, inert-gas-filled cold cathode miniature tube intended for use as a voltage regulator.
$5.90
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T-0B3_VR90
Item ID: 005831
Vacuum Tube - 0B3 / VR90, Voltage Regulator
The 0B3 is a two-element gas-filled, cold cathode voltage regulator. It is designed to provide regulated outputs of approximately 90 volts.
$3.90
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T-0C2
Item ID: 004419
Vacuum Tube - 0C2, Voltage Regulator, miniature
The 0C2 is a cold cathode, gas-filled diode of miniature construction designed for use as a voltage regulator.
$8.90
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T-0C3-A_VR105
Item ID: 004420
Vacuum Tube - 0C3-A / VR105, Voltage Regulator
The 0C3-A is a two-element gas filled, cold cathode voltage regulator. It is designed to provide a regulated output of approximately 105 volts.
$6.90
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T-0D3-A_VR150
Item ID: 004421
Vacuum Tube - 0D3-A / VR150, Voltage Regulator
The 0D3-A is a two-element gas filled, cold cathode voltage regulator. It is designed to provide a regulated output of approximately 150 volts.
$6.15
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T-0Z4-A
Item ID: 005834
Vacuum Tube - 0Z4-A, Rectifier, Full Wave, Gas
The 0Z4A is a gas-filled, double diode employing an ionic-heated cathode. Its principal application is as a full-wave power rectifier in equipment with vibrator type power supplies.
$3.90
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T-1A5GT
Item ID: 006292
Vacuum Tube - 1A5GT, Pentode, Power Amplifier
Filament type power-amplifier pentode designed for use in the output stage of low drain battery operated equipment. The 1A5GT may be operated singly or in push-pull combination.
$4.90
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