Vacuum Tube - 6973, Electro-Harmonix

Vacuum Tube - 6973, Electro-Harmonix

Electro-Harmonix
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Starting at: $34.95
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Electro-Harmonix 6973 Power Tube Beam power amplifier used in vintage Gretsch and Magnatone amplifiers. This is a real 6973, not a rebrand of a "close" tube.

SKU:
T-6973-EH-X
Item ID:
004612
Brand:
Electro-Harmonix
Type:
RoHS Compliant
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Matched PairT-6973-EH-MP609722124133
Matched QuadT-6973-EH-MQ609722124140
SingleT-6973-EH609722124126
Body Height2.812 in.
Bulb Temperature250°C
Capacitance, Grid 1 to Plate0.4 pF
Capacitance, input9.0 pF
Capacitance, output6.0 pF
Cathode Current, Max Signal, Class AB95 mA
Cathode Current, Zero Signal, Class AB62 mA
Cathode Resistor, Class AB355 Ω
Grid 1 Resistance, Fixed Bias0.5 MΩ
Grid 1 Resistance, Self Bias1 MΩ
Grid 1 Voltage, Class Ab-33.5 V
Grid 2 Input, Linear1.75 W
Grid 2 Input, Pentode2 W
Grid 2 Voltage, Pentode330 V
Harmonic Distortion, Class AB1.5 %
Heater-Cathode Voltage, negative (Uh/k-)200 V
Heater-Cathode Voltage, positive (Uh/k+)100 V
Heater Current450 mA
Heater Voltage6.3 V
Item Diameter0.875 in.
Item Height3.062 in.
Load Resistance, Plate to Plate, Class AB12.5 kΩ
Peak AF Grid 1 Control Voltage, Class AB33.5
Plate Dissipation (Wa)12 W
Plate Supply Voltage, Class AB375 V
Plate Voltage, pentode (Ua)440 V
Plate and Grid 2 Voltage, Linear410 V
Power Output, Class AB18.5 W
Packaging Information
Packaging DimensionsMatched Pair versionT-6973-EH-MP3.4 in. × 2.1 in. × 1.1 in.
Matched Quad versionT-6973-EH-MQ3.4 in. × 2.1 in. × 2.1 in.
Single versionT-6973-EH1.1 in. × 1.1 in. × 3.4 in.
Weight (Packaging)Matched Pair versionT-6973-EH-MP0.0882 lbs.
Matched Quad versionT-6973-EH-MQ0.1764 lbs.
Single versionT-6973-EH0.0463 lbs.
T-6973-EH - Single versionBody Height2.812 in.
Bulb Temperature250°C
Capacitance, Grid 1 to Plate0.4 pF
Capacitance, input9.0 pF
Capacitance, output6.0 pF
Cathode Current, Max Signal, Class AB95 mA
Cathode Current, Zero Signal, Class AB62 mA
Cathode Resistor, Class AB355 Ω
Grid 1 Resistance, Fixed Bias0.5 MΩ
Grid 1 Resistance, Self Bias1 MΩ
Grid 1 Voltage, Class Ab-33.5 V
Grid 2 Input, Linear1.75 W
Grid 2 Input, Pentode2 W
Grid 2 Voltage, Pentode330 V
Harmonic Distortion, Class AB1.5 %
Heater-Cathode Voltage, negative (Uh/k-)200 V
Heater-Cathode Voltage, positive (Uh/k+)100 V
Heater Current450 mA
Heater Voltage6.3 V
Item Diameter0.875 in.
Item Height3.062 in.
Load Resistance, Plate to Plate, Class AB12.5 kΩ
Peak AF Grid 1 Control Voltage, Class AB33.5
Plate Dissipation (Wa)12 W
Plate Supply Voltage, Class AB375 V
Plate Voltage, pentode (Ua)440 V
Plate and Grid 2 Voltage, Linear410 V
Power Output, Class AB18.5 W
T-6973-EH-MP - Matched Pair versionBody Height2.812 in.
Bulb Temperature250°C
Capacitance, Grid 1 to Plate0.4 pF
Capacitance, input9.0 pF
Capacitance, output6.0 pF
Cathode Current, Max Signal, Class AB95 mA
Cathode Current, Zero Signal, Class AB62 mA
Cathode Resistor, Class AB355 Ω
Grid 1 Resistance, Fixed Bias0.5 MΩ
Grid 1 Resistance, Self Bias1 MΩ
Grid 1 Voltage, Class Ab-33.5 V
Grid 2 Input, Linear1.75 W
Grid 2 Input, Pentode2 W
Grid 2 Voltage, Pentode330 V
Harmonic Distortion, Class AB1.5 %
Heater-Cathode Voltage, negative (Uh/k-)200 V
Heater-Cathode Voltage, positive (Uh/k+)100 V
Heater Current450 mA
Heater Voltage6.3 V
Item Diameter0.875 in.
Item Height3.062 in.
Load Resistance, Plate to Plate, Class AB12.5 kΩ
Peak AF Grid 1 Control Voltage, Class AB33.5
Plate Dissipation (Wa)12 W
Plate Supply Voltage, Class AB375 V
Plate Voltage, pentode (Ua)440 V
Plate and Grid 2 Voltage, Linear410 V
Power Output, Class AB18.5 W
T-6973-EH-MQ - Matched Quad versionBody Height2.812 in.
Bulb Temperature250°C
Capacitance, Grid 1 to Plate0.4 pF
Capacitance, input9.0 pF
Capacitance, output6.0 pF
Cathode Current, Max Signal, Class AB95 mA
Cathode Current, Zero Signal, Class AB62 mA
Cathode Resistor, Class AB355 Ω
Grid 1 Resistance, Fixed Bias0.5 MΩ
Grid 1 Resistance, Self Bias1 MΩ
Grid 1 Voltage, Class Ab-33.5 V
Grid 2 Input, Linear1.75 W
Grid 2 Input, Pentode2 W
Grid 2 Voltage, Pentode330 V
Harmonic Distortion, Class AB1.5 %
Heater-Cathode Voltage, negative (Uh/k-)200 V
Heater-Cathode Voltage, positive (Uh/k+)100 V
Heater Current450 mA
Heater Voltage6.3 V
Item Diameter0.875 in.
Item Height3.062 in.
Load Resistance, Plate to Plate, Class AB12.5 kΩ
Peak AF Grid 1 Control Voltage, Class AB33.5
Plate Dissipation (Wa)12 W
Plate Supply Voltage, Class AB375 V
Plate Voltage, pentode (Ua)440 V
Plate and Grid 2 Voltage, Linear410 V
Power Output, Class AB18.5 W

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet400.97 KB
Questions? Contact us at [email protected], or give us a call at 480-820-5411

Product Reviews

4.33 out of 5 based on 3 reviews
Clint L. - October 23rd, 2022
5 out of 5

Same brand and type of tube as others sell for a more reasonable price than other companies

Mickey Cummins - August 13th, 2020
5 out of 5

Bought four of these new. Tested them on my TV-7, which incidentally was bought and calibrated by Antique Electronic supply, and they tested the bare minimum and took a lot of warm up time to get to that. Not very pleased.

seb-ear-aaaaox.net - March 27th, 2015
3 out of 5

Edgy and harsh compared to a real RCA or Philips 6973. They will settle down a little with age, but with these being the only 6973 on the market, I see the typical New Sensor, "We are the only one who makes one now, so we don't care how it sounds, or if it sucks" attitude I saw with their horrible Sovtek 6EU7s. New Sensor managed to remove all the magic from a magical valve and they replaced it with this. It will get your amp up and working, but it won't have the tone its supposed to have. You can revoice and get the amp a little better, but I would rather just go with a JJ EL844, and less power. These are an insult to Maggies & Valcos alike.