I saw some links in this thread, but they look like marketing materials to me. Aliasing is more or less solved problem, and the claim that running a DAC at 24 MHz makes it “better” in any measurable way seems ridiculous at face value. I don’t know what is actually going on, but as far as I know they’re just taking a delta-sigma DAC and talking big talk about the oversampling. In truth, oversampling here is usually just a boring engineering choice where you trade off bandwidth and SNR.

If the Novation Peak is running an 8-bit DAC at 24 MHz, they might be making it perform equivalently to a 16-bit DAC at 48 kHz—note the ratios. This is not anything new, it’s just something old that happens to have big numbers in it.