Amp for Joseph RM-25si ?

Always have used Analysis Plus oval 9 and oval 12 wire.
Tried it briefly with Auditorium 23 cable but liked ap better.

Thank you to all who posted a response to my question(s). I have tried the AP Oval 12 and found it to be a well-engineered, cost effective and great performing speaker cable. Between cable changes and room placement/toe-in the Joseph's are sounding much better.
Thanks again.

I’m running a BAT SS amp and tube preamp through my JA Pulsars. Amazing sound. Check out BAT.

@pix4work — You might want to talk to Don Sachs about his tube pre and/or amp (KT88).  He was refurbing and modding vintage HK Citation amps and such until he decided to design his own stuff.  He says his pre/amp significantly outperform the mods he used to do on the vintage gear, which apparently was already pretty good.  He sells direct and his prices are very reasonable given the refinement and parts quality that go into his electronics.  He could probably give you a good idea of what kind of improvements you might expect with his products given his familiarity with vintage equipment, and the kicker for you is that I believe he uses RM25s in his own system.  Just FYI and FWIW. 

Thank you rlb61 and soix for your responses to my post. Great cable, IC’s and attention to speaker setup can unleash the potential lying dormant in a system. I will be enjoying these changes for a while.