Vacuum Tube - KT88, Electro-Harmonix

Electro-Harmonix
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Vacuum Tube - KT88, Electro-Harmonix

Starting at: $68.70
In Stock

Electro-Harmonix KT88 Vacuum Tube High power kinkless-tetrode for use in amplifiers such as the Marshall Major. This tube is a favorite of audiophiles. Can be used in place of 6550 for a more "round" bass signature.

SKU:
T-KT88-EH-X
Item ID:
004875
Brand:
Electro-Harmonix
Type:
RoHS Compliant
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Matched PairT-KT88-EH-MP609722128445
Matched QuadT-KT88-EH-MQ609722128452
Matched SextetT-KT88-EH-MS609722128469
SingleT-KT88-EH609722128438
Amplitude of Input Voltage16.5 V
Capacitance, Transfer1.1 pF
Capacitance, input18.5 pF
Capacitance, output12.5 pF
Cathode to Heater Voltage, Negative200 V
Cathode to Heater Voltage, Positive300 V
Filament Voltage (Uf)6.3 V
Grid 1 Voltage16.5 V
Grid 2 Current5 mA
Grid 2 Voltage225 V
Heater Current1.6 A
Item Diameter52 mm
Item Height125 mm
Load Resistance3 kΩ
Non-linear Harmonic Distortion13.5%
Output Power (POut)20 W
Plate Current (Ia)90 mA
Plate Voltage (Ua)400 V
Transconductance (S)9.5 mA/V
Packaging Information
Packaging DimensionsMatched Pair versionT-KT88-EH-MP5.5 in. × 4.3 in. × 2.2 in.
Matched Quad versionT-KT88-EH-MQ5.5 in. × 4.3 in. × 4.3 in.
Matched Sextet versionT-KT88-EH-MS6.5 in. × 5.5 in. × 4.3 in.
Single versionT-KT88-EH2.1 in. × 2.1 in. × 5.8 in.
Weight (Packaging)Matched Pair versionT-KT88-EH-MP1.0274 lbs.
Matched Quad versionT-KT88-EH-MQ2.0548 lbs.
Matched Sextet versionT-KT88-EH-MS3.0822 lbs.
Single versionT-KT88-EH0.2579 lbs.
T-KT88-EH - Single versionAmplitude of Input Voltage16.5 V
Capacitance, Transfer1.1 pF
Capacitance, input18.5 pF
Capacitance, output12.5 pF
Cathode to Heater Voltage, Negative200 V
Cathode to Heater Voltage, Positive300 V
Filament Voltage (Uf)6.3 V
Grid 1 Voltage16.5 V
Grid 2 Current5 mA
Grid 2 Voltage225 V
Heater Current1.6 A
Item Diameter52 mm
Item Height125 mm
Load Resistance3 kΩ
Non-linear Harmonic Distortion13.5%
Output Power (POut)20 W
Plate Current (Ia)90 mA
Plate Voltage (Ua)400 V
Transconductance (S)9.5 mA/V
T-KT88-EH-MP - Matched Pair versionAmplitude of Input Voltage16.5 V
Capacitance, Transfer1.1 pF
Capacitance, input18.5 pF
Capacitance, output12.5 pF
Cathode to Heater Voltage, Negative200 V
Cathode to Heater Voltage, Positive300 V
Filament Voltage (Uf)6.3 V
Grid 1 Voltage16.5 V
Grid 2 Current5 mA
Grid 2 Voltage225 V
Heater Current1.6 A
Item Diameter52 mm
Item Height125 mm
Load Resistance3 kΩ
Non-linear Harmonic Distortion13.5%
Output Power (POut)20 W
Plate Current (Ia)90 mA
Plate Voltage (Ua)400 V
Transconductance (S)9.5 mA/V
T-KT88-EH-MQ - Matched Quad versionAmplitude of Input Voltage16.5 V
Capacitance, Transfer1.1 pF
Capacitance, input18.5 pF
Capacitance, output12.5 pF
Cathode to Heater Voltage, Negative200 V
Cathode to Heater Voltage, Positive300 V
Filament Voltage (Uf)6.3 V
Grid 1 Voltage16.5 V
Grid 2 Current5 mA
Grid 2 Voltage225 V
Heater Current1.6 A
Item Diameter52 mm
Item Height125 mm
Load Resistance3 kΩ
Non-linear Harmonic Distortion13.5%
Output Power (POut)20 W
Plate Current (Ia)90 mA
Plate Voltage (Ua)400 V
Transconductance (S)9.5 mA/V
T-KT88-EH-MS - Matched Sextet versionAmplitude of Input Voltage16.5 V
Capacitance, Transfer1.1 pF
Capacitance, input18.5 pF
Capacitance, output12.5 pF
Cathode to Heater Voltage, Negative200 V
Cathode to Heater Voltage, Positive300 V
Filament Voltage (Uf)6.3 V
Grid 1 Voltage16.5 V
Grid 2 Current5 mA
Grid 2 Voltage225 V
Heater Current1.6 A
Item Diameter52 mm
Item Height125 mm
Load Resistance3 kΩ
Non-linear Harmonic Distortion13.5%
Output Power (POut)20 W
Plate Current (Ia)90 mA
Plate Voltage (Ua)400 V
Transconductance (S)9.5 mA/V

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet1.22 MB
Questions? Contact us at [email protected], or give us a call at 480-296-0890

Product Reviews

5.00 out of 5 based on 1 reviews
Anonymous - October 5th, 2011
5 out of 5

These are good souding,super reliable KT88's. Do they sound as good as 1968 vintage British made audiophile tubes? no. but if you also compare how much your paying, these sound more than good enough to come out ahead in that comparison.So there, Electroharmonix KT88 tubes are actually even better than MOV's.

Substitute Products

The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.