There would be space above the amp. Getting it into the rack is the issue because of the way it's designed.

I was also thinking that I could put a small fan or 2 on top of the amp to draw heat, if necessary. I'm using the single version of this fan on a receiver in a secondary system - works very well and noise is not noticeable from 3-4 feet away.

http://www.amazon.com/AC-Infinity-AI-MPF...rds=AC+Infinity