I'm serious! I left my Sony DA333ES receiver on while I went out to lunch. I came home to the sounds of Niagra Falls (very loud white noise) and a smell of burning rubber. The tweeters on all of my Infinity speakers were melted. This sucks! Why does the DA333ES spontaneously start producing very loud white noise when there is no source (FYI, I use the coax ditigal input). Can anybody recommend a receiver that isn't going to melt down my speakers if I should walk away from it? Thanks.