Clearance Items

New Old Stock (NOS)

Our new-old-stock tubes were made by the major U.S. manufacturers, along with a small number of European manufacturers and are tested and guaranteed.


The original Kluson® Manufacturing Company was founded in 1925 and expanded from a small machine shop by building its reputation as the music industry’s premier supplier of tuning machines, tailpieces, brackets, bushings, and other stringed instrument parts during the golden age of guitar manufacturing from the 1940s through the 1960s. That history continues today.
T-8950 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.
T-4-125A_4D21 Vacuum Tube - 4-125A / 4D21, Tetrode, Power Amplifier
The 4D21 / 4-125A is a four-electrode tube designed for use as a power amplifier and oscillator. The anode is capable of dissipating 125 watts, and cooling is accomplished by radiation.
T-C1K_6014 Vacuum Tube - C1K / 6014, Thyratron
Compact, quick heating thyratron designed for timing and control applications. It is xenon filled for quick starting and the ability to operate within very wide temperature limits.
T-5692-RED Vacuum Tube - 5692, Triode, Dual, Red Base
Triode, Dual, Red Base
T-6MJ6 Vacuum Tube - 6MJ6, Beam Power Pentode
Novar type beam power tube used as a horizontal-deflection amplifier in color and black-and-white television receivers.
T-X201A Vacuum Tube - X201A, Triode, Globe, Long Pin
Triode, Globe, Long Pin
T-8068 Vacuum Tube - 8068, Pentode, Beam
Beam pentode designed for use as a series regulator in high-voltage power supplies.
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Originally: $99.90
T-6012 Vacuum Tube - 6012, Tetrode, Thyratron
Isa negative control, xenon filled, four electrode thyratron designed for use in relay and grid-controlled rectifier applications. One type 6012 will carry 0.5 ampere in motor-control and in inverter service.
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Originally: $89.90
T-6LF6_6MH6 Vacuum Tube - 6LF6 / 6MH6, Beam Power Amplifier
Duodecar type used as a horizontal deflection amplifier in color television receivers.
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Originally: $83.55
T-7360 Vacuum Tube - 7360, Double Plate Beam
Beam-deflection tube for use in balanced-modulator, balanced mixer, and frequency-converter applications in single and double sideband, suppressed-carrier communication equipment operating at frequencies up to 100 Mc.
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Originally: $49.90
T-931A-B Vacuum Tube - 931A-B, Photomultiplier
Multiplier phototube
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Originally: $49.90
T-6689_E83F Vacuum Tube - 6689 / E83F, Pentode, Wide Band Amplifier
Special quality pentode designed for use in telephone equipment.
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Originally: $39.90
T-6JT6A Vacuum Tube - 6JT6A, Beam Power Amplifier
Beam power tube for horizontal-deflection-amplifier service in black-and-white TV receivers.
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Originally: $39.90
T-2-01C Vacuum Tube - 2-01C, Rectifier
Small, closely spaced, low-capacitance, high-vacuum diode designed for use through ultra-high frequencies. In measurement work, it is well suited to mounting in a probe and will maintain accuracy
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Originally: $36.90
T-5U4G_5AS4 Vacuum Tube - 5U4G / 5AS4, Rectifier, Full Wave
The 5U4G is designed for service as a power rectifier in AC operated receivers which require high currents
Starting at $18.40
T-227 Vacuum Tube - 227, Triode
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Originally: $31.95
T-1G4GT Vacuum Tube - 1G4GT, Triode, Medium MU
Filament type general purpose triode especially designed for use in low drain battery operated receivers.
T-416D Vacuum Tube - 416D, Triode, Planar
416D - Triode, Planar
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Originally: $22.10
T-41-ST Vacuum Tube - 41, Pentode, ST Glass
The 41 is an indirectly heated cathode type power amplifier pentode designed for service in the output stages of AC, AC/DC and storage battery operated receivers.
Starting at $7.55
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Originally: $7.55
T-5763 Vacuum Tube - 5763, Tetrode, Beam Power
Heater-cathode type transmitting beam power amplifier in the 9 pin miniature construction. It is intended for use in compact, low-power mobile transmitters and in the low-power stages of larger fixed station transmitters.
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Originally: $12.90
T-AZ41 Vacuum Tube - AZ41, Rectifier, Full Wave
High vacuum full wave rectifying tube.
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Originally: $12.90
T-6688_E180F-GP Vacuum Tube - 6688 / E180F, Philips, Pentode, RF, Gold Pin
Special quality pentode designed for use as wide band amplifier.
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Originally: $12.55
T-5840_6225 Vacuum Tube - 5840 / 6225, Pentode, Sharp Cut-Off
The premium subminiature type 5840 is a sharp cutoff pentode characterized by long life and stable performance under conditions of severe shock, vibration, high temperature and high altitude
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Originally: $9.90
T-6C4WA-ECG-P Vacuum Tube - 6100 / 6C4WA, Philips ECG, Triode, Medium-MU
Philips ECG, Triode, Medium-MU
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Originally: $9.90
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