The KT88 is used in a number of projects that I have built. I have only used JJ KT88’s but would give others a try as I have read some good reviews on a few of the other brands of tubes. When all said and done I don’t think I would spend the extra money on a set of Genalex or GEC’s, they are so expensive that I could buy a lot of other KT88’s to try out!
Projects Using KT88’sEZ260 AmplifierEZ125 AmplifierTubes4HiFi ST-70 AmplifierDynaco MKIII Amplifier
DatasheetIf the page is blank click here Genalex KT88 Datasheet