# 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 - 211 / VT-4C, Triode, Power Amplifier
New-Old-Stock (NOS) tube.
Also known by US military identifier VT-4C.
$399.90 Out of Stock Vacuum Tube - 6386, Triode, Dual, Remote Cut-Off Miniature medium-mu twin triode in which each section exhibits a remote-cutoff characteristic. It is designed primarily for use as a cascode radio-frequency amplifier, intermediate-frequency amplifier, or mixer$249.90
Vacuum Tube - 8950, Pentode, Power Amplifier
Compactron beam power pentode primarily designed for RF power output applications. Features of the 8950 are dual cathode and grid connections for lower lead inductance, and a 13 volt heater.
$199.90 Vacuum Tube - KT150, Tung-Sol Package of 2 Tung Sol KT150 power pentode tube. Made in Russia. With a massive plate dissipation of 70 watts, the Tung-Sol KT150 is the most powerful octal beam tetrode ever produced. A pair of KT150s can allow an amplifier with a power output approaching 300 watts to be built. The Tung-Sol KT150 glass envelope is a special egg shaped balloon that was developed to improve thermal dissipation and maintain a superior vacuum for the best sound. The fact that the glass envelope has no flat sides means the Tung-Sol KT150 has no problems with microphonics.$192.40
Vacuum Tube - 6CA7 / EL34, Mullard, Pentode
Power pentode of the glass octal type. This tube is suitable for all applications which require peak powers of up to 11 watts from a single tube or up to 100 watts from two tubes in the normal push-pull arrangement.
$179.90 Out of Stock Vacuum Tube - 2A3, Triode Filament type triode power amplifier. It is designed for service in the output stage of audio amplifiers where high output and low harmonic distortion is desired.$179.90
Vacuum Tube - 417A, Western Electric, Triode
9-pin miniature triode with an indirectly heated cathode. It is intended primarily for grounded-grid operation in the input stage of broad band amplifiers.
$174.90$149.90
Vacuum Tube - 5881, Tung-Sol, Tetrode, Beam Power
The 5881 is the electrical equivalent to types 6L6 and 6L6GC except that the plate and screen dissipation ratings have been increased approximately 20 percent.
$149.90 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$143.95
Vacuum Tube - 801-A, Triode, Power Amplifier
The 801A is an RF power amplifier, AF power amplifier, and modulator
$141.95 Out of Stock Vacuum Tube - 45, Triode Filament type triode power amplifier designed for service in the output stage of audio amplifiers where high output and low harmonic distortion are desired.$139.90
Vacuum Tube - 300B, JJ Electronics
This triode has a full 40 Watts of power. The robust build of the JJ 300B offers high reliability in a classy package. Each tube comes with a factory certification with sets dual matched for anode current and gain. The JJ 300B has a balanced and detailed sound with a wide frequency response.
Starting at $129.95 Vacuum Tube - 2A3, JJ Electronics The JJ Electronic 2A3 features a robust construction in a beautiful thick glass envelope. The JJ 2A3 offers 40 Watts of plate dissipation which far surpasses the headroom of other 2A3 tubes by 25 Watts. The single plate build and increased ratings give this tube the highest reliability. The JJ 2A3 has amazing detail and clarity with excellent separation. Starting at$129.95
Vacuum Tube - 8417, Beam Power Amplifier
Beam-power pentode intended for service in high power, high-fidelity audio equipments and is capable of 100 watts output in push-pull circuitry. It also finds application as a regulator tube.
$129.90$124.95
Vacuum Tube - 6386-LGP, JJ Electronics, Gold Pin
The impossible search for tubes to use in your high end studio equipment is over. JJ Electronic has spared no effort in creating a tube that meets the quality demands of working studios with the JJ 6386-LGP. This solidly constructed tube features gold pins.
$119.95 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$106.95
Vacuum Tube - 7581A / KT66, Beam Power Amplifier
Beam-power pentode primarily designed for use in audio-frequency power-amplifier applications. The 7581A is unilaterally interchangeable with the 7581 and the 6L6GC.
$99.90 Vacuum Tube - 6384, Beam Power Amplifier High-perveance beam power amplifier designed as a direct retrofit for the 6AR6 or 6098 in aircraft, military, and industrial applications$99.90
Vacuum Tube - 6C10, Triple Triode
Contains three high-mu triodes with separate pin connections for all three cathodes, grids, and plates in a compact T-9 glass envelope with the novel 12 pin base.
$99.90 Out of Stock Vacuum Tube - 6A5G, Triode, Power Amplifier 6A5G is a heater type power amplifier triode designed for the same service as types 6A3 and 6B4G. The tube is equipped with an octal base. This tube is quite free from hum so that no potentiometer is required for hum balance.$99.90
Vacuum Tube - 6CD7 / EM34, Indicator, Tuning
Electron-ray tuning indicator with triode unit and two indicating sectors of different sensitivity.
$99.90 Vacuum Tube - 1L6, Heptode Miniature type pentagrid converter designed for use in low drain battery operated receivers.$99.90