Vacuum Tube - 6973, Electro-Harmonix

Electro-Harmonix
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Vacuum Tube - 6973, Electro-Harmonix

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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.

RoHS Compliant
SKU:
T-6973-EH-X
Item ID:
004612
Brand:
Electro-Harmonix
Type:
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Matched PairT-6973-EH-MP609722124133
Matched QuadT-6973-EH-MQ609722124140
SingleT-6973-EH609722124126
Product Measurements by Type
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-MP0.092 lbs.
Matched Quad versionT-6973-EH-MQ0.184 lbs.
Single versionT-6973-EH0.046 lbs.
Product Measurements by Item
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

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