I bought a pair of Response 2 speakers (don't know about an "s" version) 10 years ago and fell in love with their speed and transparency. While I changed over to Martin Logans for my main rig, I still use the Response 2s in my office system and continue to be impressed. The only time I ever ran them with a SS amp was with an Adcom 555--bad idea, the high end was enough to give you a headache. I switched to Quicksilver Silver Edn mono amps, which, if anything, erred slightly on the dark end. I finally swapped the Quickies out for a VT100, and have enjoyed that combination for quite some time--I seriously urge you to listen to the ProAc/ARC combination. I believe that ProAc used ARC gear to voice its speakers.
I'd also beg to differ slightly with Dtanclim in that I found the ProAcs quite satisfying for rock music. The ProAcs had some slam and impact that my MLs are missing. OK, so they may not be ideal in the sense that they are mini-monitors and there is no far bottom end, but what is there is accurate and has punch.
I'd also beg to differ slightly with Dtanclim in that I found the ProAcs quite satisfying for rock music. The ProAcs had some slam and impact that my MLs are missing. OK, so they may not be ideal in the sense that they are mini-monitors and there is no far bottom end, but what is there is accurate and has punch.