In article ,
Ian White wrote:
Certainly you can, but that isn't an appropriate response to the OP's
problem.

Normal mains wiring and normal PC sound systems don't have that problem,
so what the OP has is a definite *fault*. What you do with faults is
find them, and then fix them.

Most external PC sound systems use an external amp too - and this is far
more likely to be the source of the problem through an inadequately
filtered power supply. PCs themselves generally have a well filtered PS
for obvious reasons.

--
*I love cats...they taste just like chicken.

Dave Plowman London SW
To e-mail, change noise into sound.