Frequency range s of digital noise s

Thanks Kijanki. Just how high is high frequency? Sound Application is claiming usefulness bandwidth to over 2 gigahertz (about 2.5) and I would like to relate that to noise generated by digital products, power supplies and transformers.

Thanks Kijanki. Just how high is high frequency? Sound Application is claiming usefulness bandwidth to over 2 gigahertz (about 2.5) and I would like to relate that to noise generated by digital products, power supplies and transformers.

Thanks Steve. My understanding is that ac powerlines also act as
antennas for radiation being emitted. Perhaps I could ask what
frequency ranges designers commonly try to block going into or out
of a digital player being designed as high quality today? I'm not
looking for trade secrets, just the basics thanks.

Thanks Steve, I should have known that; since only a few companies have stressed power supply quality. FWIW, Alpha, Esoteric and Wadia come to mind. Also it may be why I have consistently found that isolation and conditioning have benefited every digital player I have tried in my Spectral system.

Steve. I was just reading about the improvements of the Wadia 781 over the 581. Significant p/s improvements. Have you no idea what frequencies of noise are emitted from digital processors?