aliEnRIK:
jaxwired:Wow, I wouldn't recommend cover vents when the amp is operating. Even if it doesn't get too hot, it's bound to reduce the life of the amp, afterall, the vents are there for a reason. I just keep a dedicated duster near my hifi and simply dust it occassionally. But covering the amp when off is certainly an option although not too attractive.
Agreed
The circuit boards are just waiting to break down
Given that my 20 yr old Class A power amp, where the mosfets constantly run at about 70-75 deggrees-C, boards are absolutely fine. Your average Class-D amp running at 20-30 degrees with modern PCB's will be fine.