CED Electro Harmonix T 6550 EH Vacuum Tube 6550 Electro Harmonix P13094063CED-T-6550-EH https://cdnimages.opentip.com/full/CED/CED-T-6550-EH.jpg Electro Harmonix T 6550 EH Vacuum Tube 6550 Electro Harmonix Manufacturer Part Number: T-6550-EHSuperior high-power Octal Beam Tetrode, suitable for any amp using 6550 or KT88. Designed to hold up in even the most punishing environment of high powered bass amps, such as Ampeg SVT. With 42 watts of plate dissipation in tetrode operation and 44 watts in triode, power is improved even over desirable vintage types.Thanks to extra headroom, bass players can realize the full dynamic and tonal range of the instrumentNickel steel side rod mica supports sweet tone regardless of setup, even in combos where the tube is only inches from the speakerAlso suitable for hifi useKT88 equivalent Measurements and Specs Bulb Temperature250°C Capacitance, Grid to Others18 pF Capacitance, Plate to Others12.5 pF Capacitance, grid to plate0.88 pF Cathode Current, Tetrode230 mA Cathode Current, Triode190 mA Grid Circuit Resistance (Rg), Fixed Bias50 kΩ Grid Circuit Resistance (Rg), Self Bias0.24 MΩ Heater Current1.6 A Heater Voltage6.0 V - 6.5 V Heater to Cathode Voltage300 V, -200 V Plate Dissipation, per tetrode (Wa)42 W Plate Dissipation, per triode (Wa)44 W Plate Resistance (Ra)14.8 kΩ Plate Voltage, tetrode (Ua)800 V Plate Voltage, triode (Ua)440 V Screen Dissipation6.6 W Screen Voltage440 V Transconductance (S)11.2 mA/V Packaging DimensionsMatched Pair versionT-6550-EH-MP5.5 in. × 4.25 in. × 2 in. Matched Quad versionT-6550-EH-MQ5.8 in. × 4.3 in. × 4.3 in. Matched Sextet versionT-6550-EH-MS6.25 in. × 5.5 in. × 4.25 in. Single versionT-6550-EH2.2 in. × 2.2 in. × 5.8 in. Weight (Packaging)Matched Pair versionT-6550-EH-MP0.48 lbs. Matched Quad versionT-6550-EH-MQ0.96 lbs. Matched Sextet versionT-6550-EH-MS1.44 lbs. Single versionT-6550-EH0.24 lbs. Files Specification SheetAll Models 13094063 0609722128322 1.4400lbs 0.00 0.00 0.00

Electro-Harmonix

71.38 2025-04-25 In Stock Electro Harmonix T 6550 EH Vacuum Tube 6550 Electro Harmonix

Electro-Harmonix T-6550-EH Vacuum Tube - 6550, Electro-Harmonix

Brand Electro-Harmonix

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UPC: 0609722128322

SKU: CED-T6550EH

Price: $71.38

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Quantity:

In Stock

MATCHED PAIR	- + $151.26
MATCHED QUAD	- + $307.52
MATCHED SEXTET	- + $463.78
SINGLE	- + $71.38

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Product Description

Manufacturer Part Number: T-6550-EH

Superior high-power Octal Beam Tetrode, suitable for any amp using 6550 or KT88. Designed to hold up in even the most punishing environment of high powered bass amps, such as Ampeg SVT. With 42 watts of plate dissipation in tetrode operation and 44 watts in triode, power is improved even over desirable vintage types.

Thanks to extra headroom, bass players can realize the full dynamic and tonal range of the instrument
Nickel steel side rod mica supports sweet tone regardless of setup, even in combos where the tube is only inches from the speaker
Also suitable for hifi use
KT88 equivalent

Measurements and Specs

Bulb Temperature

250°C

Capacitance, Grid to Others

18 pF

Capacitance, Plate to Others

12.5 pF

Capacitance, grid to plate

0.88 pF

Cathode Current, Tetrode

230 mA

Cathode Current, Triode

190 mA

Grid Circuit Resistance (R_g), Fixed Bias

50 kΩ

Grid Circuit Resistance (R_g), Self Bias

0.24 MΩ

Heater Current

1.6 A

Heater Voltage

6.0 V - 6.5 V

Heater to Cathode Voltage

300 V, -200 V

Plate Dissipation, per tetrode (W_a)

42 W

Plate Dissipation, per triode (W_a)

44 W

Plate Resistance (R_a)

14.8 kΩ

Plate Voltage, tetrode (U_a)

800 V

Plate Voltage, triode (U_a)

440 V

Screen Dissipation

6.6 W

Screen Voltage

440 V

Transconductance (S)

11.2 mA/V

Packaging Dimensions

Matched Pair version

T-6550-EH-MP

5.5 in. × 4.25 in. × 2 in.

Matched Quad version

T-6550-EH-MQ

5.8 in. × 4.3 in. × 4.3 in.

Matched Sextet version

T-6550-EH-MS

6.25 in. × 5.5 in. × 4.25 in.

Single version

T-6550-EH

2.2 in. × 2.2 in. × 5.8 in.

Weight (Packaging)

Matched Pair version

T-6550-EH-MP

0.48 lbs.

Matched Quad version

T-6550-EH-MQ

0.96 lbs.

Matched Sextet version

T-6550-EH-MS

1.44 lbs.

Single version

T-6550-EH

0.24 lbs.

Files

Specification Sheet

All Models

Attention CA Residents: Prop 65 Warning

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

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