"Bret Ludwig" wrote in message
ups.com
New??

For $150, a Blaupunkt car radio and a homebrew 12.6V
regulated supply built out of a garage sale Schumacher
battery charger. I'm completely serious-unless you need
external line inputs these are as good or better than any
similarly priced home unit.

Does the car radio deliver 100 wpc rms, which is what you
can expect from a $150 receiver?

It would take an approximate 300 watt 12 volt supply to do
that (25 amps), and those run about $100 all by themselves.