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

What is 'the new class D technology'? Who makes it? What makes it different?

Power supplies range from traditional to Switch mode stuff.

Class 'd' topologies (is that correct term?) are either full bridge or half bridge, from what I read.

Are you talking about say...International Rectifier modules? or Hypex?
Doesn't Rotel use ICE modules?

Except for pure 'A' amps, A/B IS traditional.

No LF problems as near as I can tell.

The only ALL NEW design I can think of is the new NAD Masters Series amp the M2.

http://www.techshout.com/hardware/2009/28/nad-master-series-m2-direct-digital-amplifier-unveiled/

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.

Tim,
not to split hairs, but add PS Audio to your list of ICE users.
Have never owned tubes, for 3 main reasons. Panels, heat and Tubes.

Sam, repeat after me 'Class d is NOT digital'. repeat as necessary. read links I provided in earlier post.

Al, I won't make an issue of whatever it is you opin Sam said. He could clear up his intent with an additional post.

The ONLY amp I know of which can claim the title 'Digital' is the new NAD M2.

It operates in the digital mode, which I expect to be the real definition of 'digital amp'.

Tony::
Bought my first 'trinatron' 19" w/mechanical tuner for my parents when first available. before that, we had one of the miniature, 'belly top' b/w Sonys'.

As for HDTV detail, coming thru small dish, quality depends on amount of compression. more=worse picture. In worst case on my 60" SXRD, the HD picture only looks marginally better than the sd on the next channel over. Sometimes, I'd prefer the picture from my OPPO '981 thru HDMI !!

However, sports and live news always has a stunning picture. I think they use those shows as a 'hook'. One day maybe I'll be able to do the BR compar-o.