In solid state Bryston 28B monoblocks or McIntosh 601 or 1201 monoblocks are the best I've heard. Never been a big fan of Krell / Dan's work.
But if your already on-tubes, I go with either Audio Research Ref 250SE's or if you well off enough a pair of VAC 200iQ's or ultimately VAC Statement 450iQ monoblocks
As with any upgrade thou, your mileage (improvement) will vary....
But if your already on-tubes, I go with either Audio Research Ref 250SE's or if you well off enough a pair of VAC 200iQ's or ultimately VAC Statement 450iQ monoblocks
As with any upgrade thou, your mileage (improvement) will vary....