Andy Evans wrote:

I'm now a convert to mains conditioning. For some reason (??) my huge 25A
variac seemed to have a beneficial effect on smoothness and detail. Encouraged,
I bought an EPI mains conditioner, essentially a large toroidal isolation
transformer. This was smoother and more detailed again. So:
a) what mains conditioners are you using?
b) what effects do you observe?
c) where is this detail coming from - is it possible there's some compression
going on, or is it just more resolution and less interference?

Well......

The power supply in any amplifier doesn't affect compression or the like. It just
supplies DC voltage(s) to the innards.

If you knew the waveforms in the PSU you wouldn't be worrying about treating the
mains in an audiophool manner.

Likwise - the idea of RF getting onto power rails is grossly exaggerated.

If you're *really* getting any difference ( try measuring ? ) then I'd suggest you
need to take a look at your incoming mains. It must be awful in some unknown
respect ( gross interference from industrial plant ? ) for any of the above to have
any audible effect.


Graham