Vacuum Tube - KT88, Electro-Harmonix

Vacuum Tube - KT88, Electro-Harmonix

Electro-Harmonix
Vacuum Tube - KT88, Electro-Harmonix image 1
Customer image:<br/>"CAD - 120S MKII"
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Vacuum Tube - KT88, Electro-Harmonix image 1
Customer Images:
Customer image: "CAD - 120S MKII"
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 480-820-5411

Product Reviews

5.00 out of 5 based on 8 reviews
Sal garibay - December 3rd, 2023
5 out of 5

Great!

bdmartinlanttel.net - September 3rd, 2023
5 out of 5

Got power? Got KT88s - EH.

Barry Martin - May 22nd, 2023
5 out of 5

Good tube. Always like to keep a few spares for my Cary 120S MKII.

Frank Oliverio - February 27th, 2019
5 out of 5

Very fast shipping ! The Electro-Harmonix KT88 tubes made an improvement in my Cayin CS-55A. They are very affordable !! Pleasure doing business with you !

MARCUS NESTOR - December 12th, 2016
5 out of 5

Splendid! There isn't a better sounding new production KT88 available for guitar amps. I abused a pair of KT88 EH tubes in a home built DR100 clone for a year and I have no complaints. I no longer have the amp, and its shame because I really miss the sound of the KT88 's..the king of power tubes.

dvdheickahoo.com - September 14th, 2015
5 out of 5

I have had these tubes in my amp for 3 yrs. They are still going strong and they sound great! Electro Harmonix tubes sound the best of all tubes Ive tried so far.

William70 - November 27th, 2014
5 out of 5

I had EL84's in my VTA ST-70 Dynaco tube HI-FI amplifier and wanted to try a different set of tubes. The ST-70 allows several types of tubes to be used. The KT88 Electro-Harmonix sound great and look great too. I'm very happy with my purchase.

Hitoshi Kamada - October 25th, 2014
5 out of 5

The vacuum tube of self-made single guitar amp I was changed from 6V6GT in KT88.
Try replacing the vacuum tube that was purchased and enjoys the change of sound. KT88 I think that was the best.
Upon purchase, also I am satisfied a courteous packing and shipping. Thank you!

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.