Having owned amps from 25 wpc to 600 wpc and nearly everything in-between, I'd say having 600 wpc of McIntosh power would satisfy even the most demanding person with speakers of at least 87db sensitivity. Add the 2.8 dB of headroom McIntosh claims the MC611 is capable of and the amp is capable of nearly
twice its output rating on dynamics. That's a bunch.
Interestingly enough, the 55% more filter capacitance will certainly be a factor in the amplifier's output current capability below 40Hz. I saw that first hand in amplifier engineering when I worked for Rockford Fosgate.
Add to that the subtle but welcome cosmetic changes and you have the next classic in the McIntosh lineup. I'm sure
@joeinid would argue that his 1.25kws also qualify here, but the MC611s will outsell them 25 to 1 due to the price of admission. Joe, the club you're in will stay exclusive!
I have 1.2kw per channel on hand and honestly, it just isn't necessary. The only time I see (or will ever see) the PG lamps flash on my MC2600s are when I first turn the amps on.
