They all look horseshoed. Too many circuit boards and connections. Only way to know is to find out how many boards are actually HIDDEN under the top board.\n\n\n\nThe salient point is, that prepros have more components\/parts less the power amps. So avrs that have good heat management schemes and well layout to minimize interference should be just as good. Look, TLSG had to send his flagship prepros within the warranty period, lots of us don't have to do that with our avrs.