I'm interested in a 100x5R, see also here: http://www.avforums.com/forums/showthread.php?t=217619 But before I buy one I like to ask you how warm will this amplifier be at: standby? running at min level? running at max level? I ask this question because the amplifier has to built in in a cabinet. Frontside gets air and backside gets air, but on the top there are only 2cm distance. I'm now using a Acurus 200x3 and this one is very cold. Also if I am listening very loud the amplifier gets not handwarm! Thanks for any information.