I have been looking at 5 channel amps and ran across a multichannel Home Theater Amp shoot out that occurred in June of 2004 in Minnesota. There were a number of amps submitted including the Plenius Odeon, the Theta DreadnaughtII, the Gemstone, a Bryston, and a Carver to mention a few. One of the posters at AVS who had been in attendance mentioned that he thought the Theta was going to be his top choice. However its performance actually diminished once it warmed up (sort of counterintuitive). Then I saw a picture of the shoot out set up and all of the amps were stacked one atop the other in two stacks. They were not on racks stacked one above the other they were literally stacked on each other. The Dreadnaught was at the bottom of one of the stacks with a the Gemstone and two other amps on top of it. I do not think the Dreadnaught has much side venting with most of its venting out of the top. There was also a comment from one of the participants that some of the amps were fired up before hand so that they would be performing optimally when tested. I was just wondering if heat induced by stacking the amps might have caused what I would have thought was an anomaly for the Dreadnaught (performing worse once warmed up). In addition I think all of the data was taken in two channel which is probably the only practical way to try to do something like a multichannel amp shoot out. That said I don't wonder if that would have not been favorable to amps with either large or dedicated power supplies since the power supply probably does not get stressed as much with only two channels running. Anyway I just thought I would ask this forum for comments if there are any.