What kind of qualities do you enjoy most in your music and what music do you play most often? Easier to recommend tubes knowing what you like....warmth, speed, soundstage, strong bass, lots of air, treble sparkle, etc...
PS Audio BHK lacking..
I bought a used PS Audio BHK preamp to replace my Rotel. It sounds thin with no depth & bass compared to my Rotel so I let it run for over an hour with no change. I'm new to tubes so I'm looking for ideas. New tubes or what?