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

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.

Timrhu - when you move up in power the bandwidth gets lower. Your PS Audio amp's module has higher (65kHz) bandwidth than more powerful 1000ASP 1kW module. It is simply because stronger Mosfets are slower. New much faster Mosfets are introduced every year and bandwidth eventually will increase.

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

Actually, most or all of the TACT products Sam referred to accept digital inputs, and provide a d/a conversion function in conjunction with a Class D power amplification function. So I think that would legitimize the fact that Tact headlines them as "digital power amplifiers."

Unfortunately, though, that probably contributes to the widespread misconception that "Class D amp" = "digital amp," which it certainly does not in the case of a more conventional Class D amplifier that has only analog inputs.

Regards,
-- Al

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'.

I thought the question was "Does anybody have experience on Class-d or switching amps vs either a/b or traditional amps??" The question seemed general enough, not technical in nature. "true digital" seems to me as elusive as "true class A". Hard to get folks to agree on the term. Class D means "not an analog amp" to most of us. FWIW Tact amps can be digital input only, or may have an analog input in addition.