I've been reading up on Mac's suggestions and am leaning towards the QSC - made in USA and has 6 year warranty. The Crown would be my next choice.

Another question...

My 'old' amp had an auto sensing which would turn the amp on when a signal is received. After a few minutes of no signal, it would shut off. This is important because the amp is not in an easily accessed area. Neither the QSC or Crown have this ability. I assume that leaving the amp on continually is not a good idea?

Does anyone know of audio signal sensor that would automatically turn power on/off to the amp? No, the Clapper won't cut it!

Thanks