Original made in UK GEC TT21 tubes in good condition. These are internally identical to the coveted GEC KT88 except with a top cap anode - adapters are included to use these in any KT88 capable amplifier.

I purchased these from Justin at ampsandsound after buying a Mogwai SE Rev2 from him over a year ago. They were listed as matched at the time and I have only put about another 30 hours on them in the Mogwai. They are channel balanced and sound amazing. I do not have a tester to measure them since I bought them but they are very quiet and have terrific mid-range tone.

Please let me know if there are any questions and I will try to answer them quickly. Shipping is included for the CONUS only and I can do local pick-up in southeast PA if needed.