Best amp for Von Schweikert VR4SR mk2?


What is the best amp for VSA VR4SR mk2? $3000-$4000 USED
Thank you
ellyjr
Vac has always been my choice driving VSA speakers(not 4's). McCormack DNA-500 if you want solid state.
Elly, I am using the McIntosh MA6600 integrated amp which has 200 watts per channel. Used they may be had for the top of your price range. I purchased mine new, on an very good deal for less than five thousand. I have also used a tube 55 watt integrated amp to great results. As good as it is, and I really enjoy it, I like the McIntosh better. Happy hunting.
Vac Phi 2.0, I believe. Real nice synergy, but of course not as good as the VAC:VAC which followed.. :-)
I bought a McCormack DNA-500, I should have it by next week, now I need help for a Preamp that will work best with DNA-500. Thanks