When I owned my Ref 600 Mk lll's I retubed with KT 88's which produced much sweeter midrange but at the expense of bottom end. Nonetheless, much better result than the 6550's provided by ARC
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