Can any Dk users tell me what tubes they use and why?
I mainly listen to classic rock and occasional country.
I am using this with Martin Logans SL3 speakers.
I don't know if you've already seen this Stereophile review, but it includes a section on tube rolling where Siemens NOS tubes are tried. Have you been exercising this amp the last few weeks? Are you still as (or more) enthused about its performance?