Can my MC275 power speakers with 91db sensitivity

Jimmy, I have owned the Mac275 and the MC7270 SS amp. Both were good amps, but the Mac sounds more SS than tube especially when compared to my Cary V12R and CAD120's amps. One thing I really liked about the 275 is that it ran so much cooler than the Carys, just didn't have the warmth.

More than plenty. To me the Mac sounds more SS than tube, but they are a good amp and run cool. Don't worry about power, you'll have lots in resreve. Best of luck.

Remember that the 75 watt rating is conservitive on the Mac 275. It's more like 90.

I owned both and I still say if you want good SS get a Mac275...