I put kt-88's (russian) tubes and after a very long break in time they sound super sweet.
Cary V12R Tubes
I would like to try different tubes for V12R. Currently I have Svetlana EL34. I want to know which one of the recommended output tubes (per manual it could use either 6550, KT-66, KT-77, KT-88, KT-90, 6L6) should I try and what sonic different for each would I get?