The KT120 compared to the 6550C Tubes

Kt120 is warmer but less detailed. Both good choices but must be system matched. I like the Gold Lion kt88, WC 6550, Tungsol 6550, and EH kt88. I Like JJ in my Quickies. No 1 tube is the best for all amps. PT

Thanks Gpgr4blu, This is my first tube system, which also includes REF 3, preamp and a PH-7 from ARC. just looking to tweak what I have right now and move up to the 5SE, and the REF 150 later.

Thanks Plasmatech, I will look at all the different tubes as I roll them.

Is VTL 6.5 a step above the ARC REF 3?,