Amp for Joseph RM-25si ?

I would be looking for tubed amplification. It sounds like you are bi-amping your setup. I have a Forte amp I could use for the low end. If you are bi-amping, what changes did it bring to the overall presentation?

Bnrlaw, thanks so much for your responses. Your amp choices look intriguing, and the Gamut D-200 is new to me, although I see the reviews of it are very favorable. Have you found a particular cable/IC to work better than another with your Manleys or the Gamut? I would also like to read what other RM-25si owners have experienced when they bi-amp...amps, cables, imaging, frequency response, etc. I have heard it can really make these speakers sing...

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.

soix, I am intrigued by your comments on Don Sach’s tube gear and will be checking it out. FWIW, the vintage HK tube gear was really ahead of it’s time and is worth following up on, as well, and thank you for mentioning it.

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.