I just purchased 12 of the reissued Tungsol 6550's for my CJ power amp and they sound very good top to bottom with a good sound stage. They replaced SED winged C 6550's, which replaced ElectroHarmonix 6550's. All of these brands produce quality sound, but I preferred the Tungsol's. If you need to save the $$$, try the EH, it's a good tube and they are reasonably priced. I've read that the cryoed version of the SED 6550C wasn't any better than the regular version. Don't know if it's true, but I wouldn't want to spend all of that money to find out that it was only hype! Good Luck!
Audio Research amp's retubing experiences
Hello I have to retube my ar ref 600. someone retubed ar amp's generally?
the amp has 6550 svetlana C and 6922 sovtek's. since we are speaking of a big (!) number of expensive number's I am asking which brand are to choose... someone suggest me telefunken nos goldpin, others amperex bugle boy or mullard nos....
for the powertubes someone suggest me to use kt88, instead of 6550...
some suggestion's
Thank you very much!!!
Alex
the amp has 6550 svetlana C and 6922 sovtek's. since we are speaking of a big (!) number of expensive number's I am asking which brand are to choose... someone suggest me telefunken nos goldpin, others amperex bugle boy or mullard nos....
for the powertubes someone suggest me to use kt88, instead of 6550...
some suggestion's
Thank you very much!!!
Alex