Class-D or switching amps, any opinions on??

Check out the Nuforce 9SE V2 amps. Great sound and good value.
I just sent mine for the V3 upgrade. Should be very interesting.

" ... they don't mimic the special quality of tubes -- a kind of creamy sweetness in the harmonic presentation. It is easy to understand the appeal of that tube sound; it has had a grip on me for years. But what the Spectrons do is, to my mind, ultimately even more impressive....[they] have a crystalline purity in the reproduction of every voice and instrument that sounds more to me like the essence of live, unamplified music -- which I attend, on average, more than once a week year-round-- than any other amplifier, at any price, based on any technology, that I have ever heard"

-Blue Note 2009 Award for Best Amplification by Enjoy The Music to Spectron Audio amplifier - http://spectronaudio.com/

John Ulrick of Spectron is the inventor of class D audio amplifier in1976.

Check their awards and professional reviews on their web site and do Audiogon search for the owners comments/reviews.

All The Best In Your Search

Rafael

Here are some interesting links:
The International Rectifier module has a fullbridge / halfbridge selector switch for those who can't decide!

https://ec.irf.com/v6/en/US/adirect/ir;jsessionid=74D07C3679B3902FCD3E847F05518E49?cmd=catSearchFrame&domSendTo=byID&domProductQueryName=IRAUDAMP7S

Here is another link with several articles on 'd' amps.

http://www.irf.com/product-info/audio/classddesign.html

I have the IR reference board out in the garage, awaiting a power supply. I will be able to directly compare with an ICE moduled PS Audio GCC integrated, which I will probably be forced to use as a preamp! Awaiting funds to build a +-55volt ps.

Dob - Sinclair produces class D audio amplifier called X-10 in 1964 (Designer: Gordon Edge)

That is one of the best descriptions I've yet heard. Class A is more like meat and potatoes where as class D is more like sushi. Nice analogy Jax!