Last year I purchased an Aric Audio "Push Pull" amplifier with upgraded caps, EL34 and 6SN7 tubes. This is my first Push Pull, and it is brilliant like all of Aric's gear. The amp will accept KT88s, KT120s, and KT150s as well; but have kept the EL34s in right now.....but I do have a pair of KT88s and KT120s around, I'll give them a try once I get my system back together