More often than not, not enough power. Got the Parasound Halo A21+, class A/B, 500 watts per channel @4 ohms feeding my PBN Montana XPS speakers and the first 6 watts are pure class A. Not too much heat and packs a wallop.
Too Much Power
Please bear with me as I am nowhere near an expert at this type of thing...
I recently read a review of the PS Audio Stellar M1200 mono amps. I was somewhat taken aback by their power rating of 600 watts at 8 ohms/1200 watts at 4 ohms. Made me wonder what, if any, are the drawbacks to that much power? Welcome your thoughts...