The message >
from Mike Smith > contains these words:

> Obviously higher supply voltages are being used in
> higher-power amps.

Yes, I didn't think about it, having never had need for more than a few
watts myself. I've built step up voltage convertors before to charge
higher voltage batteries than a 12V feed will allow.

--
Skipweasel.
Ivor Cutler - "Never knowingly understood."