Amp for VR4SR


I am looking for an amp to run my VR4SR.
My music is mainly vocal, strings and classic.
Has anyone checked VAC AVATAR vs UNISON RESEARCH - PREFORMANCE ?
Second hand will be just fine.
Budget is up to $5K- $6K
Would like to also hear about SS amp and or combination of Preamp + power amp - as long as it was checked Specifically with the VR4SR.
Thank you
128x128takeone
I would suggest as much power as you can possibly get. I think they can sound uninvolving unless they get plenty of power. I chose the Parasound JC-1s over the VTL 450s and am using a solid state Ayre K-1x preamp. Maybe dynamics won't be at the top of your want list with the kind of music you like most but as far as I can tell they just don't jump to life without some power.
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Thank you Ejlif & Tvad.
Talking about power: did anyone try the VR4SR with a set of Jeff Rowland mono amps? In my experience (not with the VR) they have lots of power - very clean and accurate. I consider Valves because I love the warm sound, although like also lots of details and excellent sound stage. But if these pair need lots of power than maybe a set of Jeff Rowland as the power unit + a valve pre-amplifier (vac, cary, lamm ….?) will fit the most?
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To add something to the mix I am running my 4sr's with a 16 watt Art Audio Carissa with great results in a 15x17 room. It depends on how loud you want to play. I think the quality of the amp and its power supply are key. The speaker will repeat what you put into it. Best of luck.

Blessings, Bob