"Andy Evans" wrote in message
...
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 ? )

No industrial plants I know of. The differences with a mains
isolation
transformer are subtle, but audible and very satisfying in fact.
There's always
a danger of trying to seperate binaries such as "theory versus
practice" on
this ng, and I'm simply reporting what I hear in this instance. It
may be the
case that 'if you can hear a difference there's something grossly
wrong' but I
somehow don't think there's anything grossly wrong anywhere in this
case.

=== Andy Evans ===
Visit our Website:- http://www.artsandmedia.com
Audio, music and health pages and interesting links.

It has to be said that in the main amplifier PSUs are very simple and
usually a tad underrated - on the basis that few people can and will
run them to the limit. Voltage rail limiting and the attendant
clipping distortion is likely to set in long before that!

A good amp with a good regulated PSU - as designed by the sadly missed
and late John Lindsey-Hood - makes a world of difference. There you
really do notice the difference, as I'm sure Pinky and others will
agree, but in the commercial world they are very few and far between
and horrendously expensive to boot.


--
Woody