KT88

KT88 tube specs The KT88 is a classic tetrode vacuum tube used in many HiFi and guitar applications. It is commonly found in output stages where a KT88 amp is designed for strong headroom, solid bass response, and reliable power handling. Below are general specifications for reference. Full operating data, curves, and additional details should be confirmed on the data sheet for the specific tube version being used. Below are general specifications. Please refer to the downloadable datasheet for complete details. Specification Details Tube Type Beam power tetrode Base Octal, 8-pin Heater Voltage 6.3 V Heater Current 1.6 A Maximum Plate Voltage 800 V Maximum Screen Voltage 600 V Plate Dissipation 42 W Screen Dissipation Up to 8 W Cooling Natural air / convection KT88 data sheet download Download the KT88 data sheet to review electrical characteristics, pinout, limiting values, and typical operating conditions for KT88 amplifier design, servicing, and replacement planning. KT88 vacuum tube substitute & equivalent information The KT88 is widely used in hi-fi and instrument amplification, and in many cases it can serve as a replacement for current-production and reissue versions from major audio tube brands. Common brand-reference searches include Linlai, PSVANE, Mullard, Shuguang, TAD, KR Audio, and Marshall KT88 replacement requests. It may also be used in amplifiers from brands such as Blackstar, Cayin, and Music Angel where the amp is designed around KT88 operation. In some amplifiers, KT90, KT120, and KT150 tubes are also considered acceptable substitutes, but this is never universal and should always be confirmed against the amplifier’s bias range, current draw, physical clearance, and manufacturer guidance before installation. If you need help choosing between replacement options, contact Pentalabs. As experienced vacuum tube manufacturers, we can help you compare KT88 options from our range of HiFi tubes and guitar amp tubes for sale.