[R-390] Class D Amplifiers

[Barry]

A while back, there was some discussion on this list about outboard audio amplifiers.  I don't recall whether these came up, but has anyone worked with Class D amplifiers?  If so, are they troublesome - specifically with respect to noise?

>From what little I've read about them, there are some pretty rigorous constraints with grounding, filtering, etc., to keep them from sourcing too much noise back into the system where they're used.

Just looking at the one below and thinking that, at the price, it would make a decent amp for the R390.

http://www.parts-express.com/pam8610-2x10w-class-d-audio-amplifier-board--320-604

Bad idea?

Thanks,
Barry - N4BUQ