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 - 6AS5, Tetrode, Beam Power
Miniature beam pentode designed primarily for use in the audio-frequency power output stage of automobile receivers. The tube is capable of delivering a relatively high power output at low plate and screen voltages.
Vacuum Tube - 6BJ7, Triple Diode
Miniature, triple diode primarily intended for use as a d-c restorer in each of the three signal channels of color television receivers. For flexibility in circuit design, each diode incorporates a separate cathode
Vacuum Tube - 6BN4A, Triode, HF
Miniature medium-mu triode designed for as a radio-frequency amplifier in a VHF television tuner.
Vacuum Tube - 6AG5 / EF96, Pentode
Miniature type RF pentode having a sharp cut-off characteristic and a high value of transconductance. In compact, light-weight equipment it is useful as an RF amplifier up to about 400 megacycles.
Vacuum Tube - 6BY7 / EF85, Pentode
R.F. pentode with variable transconductance for use as wide-band amplifier.
Vacuum Tube - 6CN7, Dual Diode, Triode
Duplex-diode high-mu triode in which separate cathodes are provided for the diode and triode sections. The tube is primarily intended for service as a combined horizontal phase detector and reactance tube in television receivers.
Vacuum Tube - 6BK7-A-B, Dual Triode, HF
Miniature twin triode designed primarily for use as a cascode amplifier at frequencies below approximately 300 megacycles.
Vacuum Tube - 6BN6 / 6KS6, Discriminator, Gated Beam
Heater-cathode type beam tube of miniature construction designed primarily to form the combined operations of the limiter, discriminator, and audio-voltage amplifier in FM and intercarrier television receivers.
Vacuum Tube - 6J6A / ECC91, Dual Triode, Medium MU
Twin triode in the 7 pin miniature construction. It can be operated in parallel or push-pull.
Vacuum Tube - 6CS6 / EH90, Heptode
Miniature dual control pentagrid tube intended for use in sync separator circuits. In these circuits it provides improved noise immunity. Both control grids have sharp cut-off characteristics.
Vacuum Tube - 5726 / 6AL5W, Dual Diode
Twin diode miniature type intended for applications where dependable performance under shock and vibration is paramount. The 5726 is a "premium" version of the 6AL5W
Vacuum Tube - 6FH5, Triode, HF
Neutrode triode tuner in the 7 pin miniature construction. It is designed for use in grounded cathode RF amplifiers, with the neutrode construction providing a lower grid to plate capacitance with consequent ease of neutralization.
Vacuum Tube - 3Q4, Pentode, Power
The type 3Q4 is a miniature type power-amplifier pentode designed for use in the output stage of battery operated equipment.
Vacuum Tube - 6AU4GTA, Diode, Damper
Single heater-cathode type diode intended for service as the damping diode in the horizontal-deflection circuit of television receivers. High output current capabilities make the tube particularly well suited for autotransformer deflection systems
Vacuum Tube - 6AF4A / 6DZ4, Triode, UHF, Oscillator
Medium-mu triode in the 7-pin miniature construction. It is designed for local oscillator service in television receivers which operate in the UHF region, internal lead inductance is reduced by employing double connections to the plate and grid.
Vacuum Tube - 6BY6, Heptode
Miniature dual-control heptode designed primarily for use as a combined sync separator and sync clipper in television receivers. Each of the two independent control grids exhibits a sharp cutoff characteristic.
Vacuum Tube - 6BS8, Dual Triode
Miniature, medium-mu twin triode designed for use as a VHF cascode amplifier. In this application, section two (pins 1, 2, and 3) is intended for the input section.
Vacuum Tube - 6HA5 / 6HM5, Triode, HI MU
Miniature triode designed particularly for service in VHF television tuners as a grounded-cathode RF amplifier.
Vacuum Tube - 5678, Pentode
Subminiature pentode for use as R.F, M.F., or A.F. amplifier, oscillator, self-oscillating mixer, A.M. detector etc.
Vacuum Tube - 6K7G, Pentode, Remote Cut-Off, RF
The 6K7G is an indirectly heated pentode of the vari-mu (remote cut-off) type for use in the RF or IF stages of radio equipment.
Vacuum Tube - 6CT7 / EAF42, Pentode
Single diode, remote cut-off R.F. pentode.
Vacuum Tube - 1S5 / DAF91, Diode, Sharp Cut-Off Pentode
Miniature tube containing a diode and a sharp-cutoff pentode. It is designed for use as a combined detector and audio-frequency voltage amplifier in compact battery-powered equipment.
Vacuum Tube - 35B5, Tetrode, Beam Power
Miniature beam power amplifier especially designed for use in the power output stage of a-c/d-c receivers. Its small size and high efficiency make the tube especially useful where space limitation prevent the use of larger types.