What McIntosh Amp With Thiel 3.6 Speakers?

I would highly recommend the MC-352. The 3.6's are not easy to drive and the 350 watts that MC-352 provides is just what you need. I had a chance to hear the 3.6's with Mark Levison No 335 and found the combination too cold and edgy. When plugged the MAC, the sound was transformed: smooth, musical, liquid and very dynamic. The Thiels tend to be a little bright in the upper mids and the Mac's smooth, rich almost tube-like midrange tonality really helped to tame things down. Great synergy. The same can be said about the MC352 and B&W Nautilus series, particularly 802 and 801 that also tend to emphasize the upper mids/lower treble and really require a serious amount of quality watts to sound their best.

Mitcheft is correct in his discription of MC-300. I used to own it myself before I upgraded to the MC-352. Although it may look like the amps should be similar, they are totally different in character. The MC-300 is a bit brighter in the upper mids and the treble, sort of glitzy, nice, but not perfect. The mids are nice but are a little higher pitched than the rich mids of the MC-352. MC-352 has beautiful, nicely resolved treble, a little recessed upper mids, rich and refined midrange, great bass with excellent extension and control. Both are wonderful amps, but MC-352 is a much better unit. It walks all over its older brother in transparency, dynamics, bottom end extension and control. At the same time it's lush and musical, never sterile or uninvolving. The bigger MC-602 is very similar and I really don't think it's worth the price difference, and I can't imagine any speakers that would significantly benefit from from such increase in power. The 350 watts of the MC-352 should be more than enough to drive even the toughest loads.