KT88 - JJ Electronic

The JJ KT88 beam power tetrode tube is a high quality option for bass, guitar and hi-fi tube amplifiers. Most amps using the 6550 can also use the JJ KT88 for a slightly different sound.  They are a drop in replacement but do require rebaising. Thanks to its robust construction it is very reliable and unlike some other KT88 tube types, the JJ KT88 does not connect anything internally to the metal base ring, making it safe to use in all applicable applications.

Open Datasheet - KT88