No one is a fool for being skeptical. Many of the claims in audioland
are quite foolish indeed.

Yet in a high resolution system, power cables and interconnects can
make a difference. Not always an improvement, but a difference. A
large fat power cable can augment an insufficient power supply in a
real world power situation. Admittedly not the right solution, but it
can help.

I recently changed the IC's in a Quad 306 power amplifier (TI's to
Burr-Browns) playing through some Quad 988s. My wife (not an
audiophile), walked in the room and immediately asked what had
changed... "it sounded more alive" was her comment.