>All higher power car amps use dc/dc converters to up >the voltage. Doubling the supply voltage will go a long >way in the direction you need, Tal. For a simple >solution, try a simple switcher from National. It will be >noisy only if you lay out the boards badly ;-). Of course another solution is to wait for vehicles with the new 42V standard supply to arrive :) -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics