Preamp suggestion for Quicksilver M120 amps

Greetings, I strongly disagree with going passive. At the quick judgment, it serves for wonderful elevator music. Playing a Beethoven piano concerto I find them in a stupor with dynamic contrasts. if you want Joe Bonamassa to sound like Jack Johnson then okay. The thing that is refreshing in having a purpose-built real matching preamp it creates spontaneity with our musical moments with a cohesive aliveness.
I would not dismiss the latest 12 AT7 unit from Quicksilver without hearing it you may be doing yourself a disservice as also Quicksilver Phono. JohnnyR Quicksilver Dealer

AgrantthPlease don't forget many tube preamps invert polarity and the Quicksilver  does **invert >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>simply swap the positive / Negative speaker wires at either both channels of the amps or Speakers done!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>Normal Polarity is Positive amp to positive at speakers
Normal Polarity is Negative amp to Negative at speakers**Inverted is Positive amp to Negative post at the speaker**inverted is Negative amp to Positive Post at the speaker  Best JohnnyR Quicksilver dealer

1 Did you invert polarity?2 Did you try lifting the AC cord grounds FYI its the round ones with cheaters on the amps?