Thanks Lrsky. Its a Denon. I figured that the amp section needed more space due to its larger parts and the amount of heat they might generate. The amplifier does get warm. It is beyond warrenty now, so I didnt think there would be any harm in looking. My friend says it does need to be cleaned, but that it isnt in terrible shape as yet. He also suggested the compressed air would be a way to do this. What I think I am curious about is, in the ideal does the preamp section benefit from more space and order? Is heat a culprit there as well? or can it be? Or do a lot of preamp sections- regardless of price, look this generally cramped and messy and still function basically as well as the very best models can? Looking at it as I am- someone with no experience and only observations, I am sure its possible that what I see as cramped and messy could very well be quite well laid out( given, as you say, constraints) , so I am not being critical as much as curious. Anyway- thank you for responding.