Ralph only speaks the truth...
When I had Ref3 hooked up to BAT 150SE, I lost bass weight. Problem was impedance matching as Ralph pointed out, Ref3 has a relative high output impedance. I am surprise to read Pass being mentioned here, Pass is known to have low input impedance among SS.
Safe bet is tube amp, but not all tube amps are created equal.
When I had Ref3 hooked up to BAT 150SE, I lost bass weight. Problem was impedance matching as Ralph pointed out, Ref3 has a relative high output impedance. I am surprise to read Pass being mentioned here, Pass is known to have low input impedance among SS.
Safe bet is tube amp, but not all tube amps are created equal.