Preamp suggestion for Quicksilver M120 amps

Will report back. Greatly appreciate your help!!!

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

Yes, it appears on the QS website, specs show both Linestage and Remote control preamps list "inverted", 180+ degrees polarity on output.  Some interesting feedback on it and what to do or try, fwiw. 

Video/Youtube:
Paul at PS Audio did a quick video on the topic for a write-in question.  The link may get filtered out, but I'll post it here both ways, and with spaces, cut & paste and pull back together, try it.  https://youtu.be/HJKshrTGPtI   or  h t t ps: / / y o u tu.be / H J K s h r T G P t I

Got the Line stage. Spent 20 min listening. Compared to solid state Simaudio Moon P5 , it feels like I lost the grip of M120s. Solid bass, full midrange are gone. Need to do more listening.  

OK, now I am confused more then ever. Have 3 preamps on hand: QS LS, passive Prometheus TVC and Simaudio P5 (dual chassis). QS was the least favorite of the 3: no weight, very lean, dry sound. The TVC gave me some weight, transparency. Simaudio was the best, it owned the M120s, full rich sound, very spacious.
Now what? I was hoping QS would be the ticket. Stock tubes, I do not think the amp was ever opened. Do I take a chance with NOS? 

Anybody had good results wuth QS power using a SS pre?

Gents, please weight in!