" two samples at 22k, four at 11k, etc, cant accurately reproduce the complexity of those waveforms. sine waves yes, musical complexity, no"


Nonsense. You just don't understand th eissues so you make up stuff and repeat bs by others.



" upsampling mitigates this to some degree, i found this out when i got my sacdp. my rbcds are more listenable now.

...regards...tr"

False again. Oversampling has been used for a very long time.

Please do your homwork on the technical aspects