Old thread, but just ran across it. I have switched to NOS GE 6550A in my Bob Carver Black Raven 200 mono blocks. The improvement over the current production Russian tubes is incredible. I was going to try KT120s, but instead I bought another 14 NOS GEs. These are the favorite tube of Stu Hegman and Bob Carver and I see why. Bob loves to tell the story of when he asked Stu about Genelex KT88s and Stu raised his pinky and said "Watered-down British tea." If you are thinking of getting some new Russian tubes, now maybe the time. With oil prices so low and strangling the Russian economy, our response ( like the response if Jimmy Carter in 1980) may be to impose an embargo if Russia gets more agressive in Ukraine.
Do we still need 6550 or KT88 tubes?
I would like to learn your opinion and experience with KT120 tubes.
Considering that KT120 match 6550 or KT88 based amp (is a direct replacement), how do you like the sound of KT120?
Do we still need 6550 or KT88 tubes?
Do we still need to pay for NOS power tubes?
BTW at the moment a KT150 tube is announced. Should be even better than KT120 and could be interesting upgrade for current KT120 owners.
Considering that KT120 match 6550 or KT88 based amp (is a direct replacement), how do you like the sound of KT120?
Do we still need 6550 or KT88 tubes?
Do we still need to pay for NOS power tubes?
BTW at the moment a KT150 tube is announced. Should be even better than KT120 and could be interesting upgrade for current KT120 owners.