Steven Sullivan wrote:
Fran??ois Yves Le Gal wrote:
On 29 Jan 2004 01:20:57 GMT, chung wrote:

there is a possibility that such noise may cause problems in amplifiers
and speakers, which result in intermodulation and other effects that are
audible.

It's more than a possibility, particularly with improperly designed and
marginally stable "audiophile" electronics. Hence the variable low pass
filter fitted to a number of SA-CD players...

What's the highest frequency such filters allow to pass?

More importantly, what is the attenuation of such filters at 20KHz? And
if such filters are used, there goes the advantage of higher bandwidth
of SACD.