I went back to SS to get the power I was missing from a tube amp I once owned(Anthem amp1). Upgraded the pre from a LS7 to a AES-3. The pwr amp is a Audible Illusions S120. A great combo. Tube rolling is fun but expensive. Now I only have two tubes to roll and most are from the USA(6sn7's). I will get another tube amp down the road. I still have plenty of EL34's.