Thinking about this a bit more, I suspect the reason for the superb sonic reputation of a lot of inexpensive "Class T" digital amps is that they push the freque

Thinking about this a bit more, I suspect the reason for the superb sonic reputation of a lot of inexpensive "Class T" digital amps is that they push the frequency-domain distortion problems into a different frequency. Digitally switching at far higher frequencies than audio and then modulating audio onto that signal is a pretty brilliant approach. You get the cost benefits of digital switching amps, without audio frequency domain artifacts from all the many kinds of low-level signal crud. The artifacts are there - they're just several octaves out of band for audio.