Vacuum Tube - KT88, Genalex Gold Lion

Genalex
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Vacuum Tube - KT88, Genalex Gold Lion

Starting at: $58.50
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  • Single
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KT88 power tube reissue of Genalex Gold Lion. Made in Russia.

In 1957 Marconi-Osram Valve Co. (Genalex) introduced the "King of Power Tubes", the legendary Gold Lion KT88. This tube became the heart and soul of such classics as the Dynaco Mark III, McIntosh MC275, and Marshall Major. Unfortunately, Genalex ceased tube production in the early 1980s and the Genalex Gold Lion KT88 has become very expensive and hard to find.

After extensive research and engineering, New Sensor Corp. has reissued the famed Genalex Gold Lion KT88. This tube has been recreated down to the finest detail with gold plated grid wire, carbonized screen grids, and a tri-alloy clad plate structure for exceptional performance and sound quality.

SKU:
T-KT88-GEN
Item ID:
039549
Brand:
Genalex
Type:
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
SingleT-KT88-GEN
Matched PairT-KT88-GEN-MP
Matched QuadT-KT88-GEN-MQ
Matched SextetT-KT88-GEN-MS841358102585
Product Measurements by Type
Body Height110 mm
Capacitance, grid to plate1.2 pF
Capacitance, input16 pF
Capacitance, output12 pF
Cathode Current (Ik)175 mA
Gain (μ)8
Grid 2 Dissipation6 W
Grid 2 Voltage≤ 600 V, 250 V typical
Grid Circuit Resistance (Rg), Cathode Bias220 kΩ
Grid Circuit Resistance (Rg), Fixed Bias100 kΩ
Heater-Cathode Voltage (Uh/k)150 V
Heater Current1.6 A
Heater Voltage6.3 V
Item Diameter52 mm
Item Height125 mm
Plate Dissipation (Wa)35 W
Plate Resistance (Ra)12 kΩ
Plate Voltage (Ua)≤ 600 V, 250 V typical
Transconductance (S)11 mA/V
Packaging Information
Packaging DimensionsMatched Pair versionT-KT88-GEN-MP1 in. × 1 in. × 1 in.
Matched Quad versionT-KT88-GEN-MQ1 in. × 1 in. × 1 in.
Matched Sextet versionT-KT88-GEN-MS6.9 in. × 5.56 in. × 4.29 in.
Single versionT-KT88-GEN5.5 in. × 2.25 in. × 2.25 in.
Weight (Packaging)Matched Pair versionT-KT88-GEN-MP3.176 lbs.
Matched Quad versionT-KT88-GEN-MQ6.352 lbs.
Matched Sextet versionT-KT88-GEN-MS9.528 lbs.
Single versionT-KT88-GEN0.263 lbs.
Product Measurements by Item
T-KT88-GEN-MP - Matched Pair versionBody Height110 mm
Capacitance, grid to plate1.2 pF
Capacitance, input16 pF
Capacitance, output12 pF
Cathode Current (Ik)175 mA
Gain (μ)8
Grid 2 Dissipation6 W
Grid 2 Voltage≤ 600 V, 250 V typical
Grid Circuit Resistance (Rg), Cathode Bias220 kΩ
Grid Circuit Resistance (Rg), Fixed Bias100 kΩ
Heater-Cathode Voltage (Uh/k)150 V
Heater Current1.6 A
Heater Voltage6.3 V
Item Diameter52 mm
Item Height125 mm
Plate Dissipation (Wa)35 W
Plate Resistance (Ra)12 kΩ
Plate Voltage (Ua)≤ 600 V, 250 V typical
Transconductance (S)11 mA/V
T-KT88-GEN-MQ - Matched Quad versionBody Height110 mm
Capacitance, grid to plate1.2 pF
Capacitance, input16 pF
Capacitance, output12 pF
Cathode Current (Ik)175 mA
Gain (μ)8
Grid 2 Dissipation6 W
Grid 2 Voltage≤ 600 V, 250 V typical
Grid Circuit Resistance (Rg), Cathode Bias220 kΩ
Grid Circuit Resistance (Rg), Fixed Bias100 kΩ
Heater-Cathode Voltage (Uh/k)150 V
Heater Current1.6 A
Heater Voltage6.3 V
Item Diameter52 mm
Item Height125 mm
Plate Dissipation (Wa)35 W
Plate Resistance (Ra)12 kΩ
Plate Voltage (Ua)≤ 600 V, 250 V typical
Transconductance (S)11 mA/V
T-KT88-GEN-MS - Matched Sextet versionBody Height110 mm
Capacitance, grid to plate1.2 pF
Capacitance, input16 pF
Capacitance, output12 pF
Cathode Current (Ik)175 mA
Gain (μ)8
Grid 2 Dissipation6 W
Grid 2 Voltage≤ 600 V, 250 V typical
Grid Circuit Resistance (Rg), Cathode Bias220 kΩ
Grid Circuit Resistance (Rg), Fixed Bias100 kΩ
Heater-Cathode Voltage (Uh/k)150 V
Heater Current1.6 A
Heater Voltage6.3 V
Item Diameter52 mm
Item Height125 mm
Plate Dissipation (Wa)35 W
Plate Resistance (Ra)12 kΩ
Plate Voltage (Ua)≤ 600 V, 250 V typical
Transconductance (S)11 mA/V
T-KT88-GEN - Single versionBody Height110 mm
Capacitance, grid to plate1.2 pF
Capacitance, input16 pF
Capacitance, output12 pF
Cathode Current (Ik)175 mA
Gain (μ)8
Grid 2 Dissipation6 W
Grid 2 Voltage≤ 600 V, 250 V typical
Grid Circuit Resistance (Rg), Cathode Bias220 kΩ
Grid Circuit Resistance (Rg), Fixed Bias100 kΩ
Heater-Cathode Voltage (Uh/k)150 V
Heater Current1.6 A
Heater Voltage6.3 V
Item Diameter52 mm
Item Height125 mm
Plate Dissipation (Wa)35 W
Plate Resistance (Ra)12 kΩ
Plate Voltage (Ua)≤ 600 V, 250 V typical
Transconductance (S)11 mA/V

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet2.7 MB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on November 9th, 2017.
Matt H
November 9th, 2017
These are matched directly from the manufacture.

Product Reviews

3.50 out of 5 based on 2 reviews
- August 15th, 2020
2 out of 5

Bought (8) eight KT88 in matched sets of four. One appears to have been defective as it arced at the base (I saw it), and it blew my B+ fuse. My amplifier is now in the shop to see if any other damage was done. If this is indeed one bad out of eight, it is not a good track record. Will update further if is allowed when I get it back from the repair shop.

- March 13th, 2017
5 out of 5

I absolutely love these tubes in my vintage Marshalls. They are very musical and rich sounding. With head room for days. KT-88 Genalex Gold Lion tubes are far better than any other brand 6550 or KT-88 that I have tried and very much worth the extra cost. I plan to use them in all my vintage Marshalls from now on. Thank you Amplified parts for suppling me with greats parts. :)