Originally Posted by DotJun
So would you say a well built class D pro amp is virtually silent?
It is not the "class" but how it is used-the intended application and so forth.
Yes class D produces very little heat-but there are different "classes" of class D.
An amp consists of 2 parts- the amp itself and the power supply. How the power supply is designed can make a difference.
Also the intended usage. Typical pro usage requires much longer duty cycles-more heating-higher ambient temps (think outside on a hot sunny day) and so forth.
An amp designed for that type of usage will have a plan for better air flow management than one intended for home usage.
The amp itself my be identical-but the air management can be totally different.
A class D with a decent size heat sink (still very small compared class A/B of the same wattage), will be totally (or pretty close-depending on the switching design of the power supply) quiet (in terms of physical noise).
The big thing class D offers is high output. But what sort of a market (real market) is there in home usage? I think most manufacturers are going after the guys who buy lots of amps-the pro guys-who don't care so much about fan noise-as nobody is close to the amps-or if they are-they don't really care.
YES there are exceptions-for quieter shows-but those are the exception-rather than the "rule".