Arfa Daily wrote:

Secondly, if the computer is within spec regarding its emmissions, then you
would have to question why an expensive amplifier is being affected to a
degree that you can hear, by such a low level of mains borne noise ?

Could be a high-end amp with capacitors bypassing the psu diodes to reduce
'diode switching noise'
and let through RF - thus creating a market for special filtered mains cables.

--
Eiron

There's something scary about stupidity made coherent - Tom Stoppard.