Just speculation I've read online at AVS and other forums about why a lot of the Denon 3800/4800 lineup seem to prematurely get the red light of death, a lot of users indicate their receivers were running extremely hot before they went into permanent protection mode. Could be from a different reason certainly, but the low profile nature of these receivers, light amount heatsinks in these models and fans almost never turning on seems to be intuitively a possible cause.Not sure what to say. Noise floor above 40dB is a bit loud. Also not aware that 3800H's are dying from heat related issues?