They all have the same characteristics with their mandatory switching filters on their outputs. And the ones that have smp power supplies have even another problem to deal with, regarding noise.
I'm not going to point the finger at any brands as that would be against forum policies. And I have been warned a couple of years back for it.
All you have to do is listen to them against good linear amps on a revealing system. Then look at any graph/tests done with power output vs thd in the higher audio frequencies and see how it rises very quickly vs lower frequencies, look if you can get it current output in the upper frequencies vs the lower frequencies. Then also if you get get them the phase shift from 10khz to 20khz. And then for good measure the noise figures in the upper frequencies vs lower.
" Class D " and the virtues of, a guru roundtable discussion setup by Absolute Sounds
http://www.stereo.net.au/forums/index.php?/topic/50607-class-d-and-the-virtues-of-a-guru-roundtable-discussion-setup-by-absolute-sounds/#entry843343
Cheers George
I'm not going to point the finger at any brands as that would be against forum policies. And I have been warned a couple of years back for it.
All you have to do is listen to them against good linear amps on a revealing system. Then look at any graph/tests done with power output vs thd in the higher audio frequencies and see how it rises very quickly vs lower frequencies, look if you can get it current output in the upper frequencies vs the lower frequencies. Then also if you get get them the phase shift from 10khz to 20khz. And then for good measure the noise figures in the upper frequencies vs lower.
" Class D " and the virtues of, a guru roundtable discussion setup by Absolute Sounds
http://www.stereo.net.au/forums/index.php?/topic/50607-class-d-and-the-virtues-of-a-guru-roundtable-discussion-setup-by-absolute-sounds/#entry843343
Cheers George