@jea48, Yeah, thats what we are talking about. If we have consumption power 480W and take a transformer that can handle 1000W, isn't it enough to have a double reserve for peak power consumption? And again, if it depends on listening volume, I'm not gonna terrorize my neighbors. No matter that I love death metal, I like to listen to it on comfortable level, like a middle between relaxing and having fun you know.
What about LLC SMPS, it's advantages are possibility of low power consumption at light-load/standby and efficiency up to 98%, M150 has 95%, which must mean that the real power consumption is not far from it's power output. Again, quote from hifinews:
M150 is reinforced by a PFC (Power Factor Correction) version of its RPS power supply. Rated at 150W/8ohm, the M-150 delivers 2x167W/8ohm and 2x315W/4ohm with 175W, 335W, 565W and 690W available under dynamic conditions into 8, 4, 2 and 1ohm loads.
My speakers have minimum 3ohm, not less if I understand right Erin's graph:
But I don't understand what is EDPR, it's something terrifying.