- Oct 16, 2005
I'm looking into building a +/- 12V power supply to replace the wall wart for a phono preamp that I've had lying around (a Grado PH-1). I've been pretty happy with the STEPS I built for my Millett Hybrid, but the STEPS only has a positive output. Are there any good DIY designs for a dual-output power supply? I'd prefer something that I can order PCBs for, just as a convenience thing, but I'm willing to wire it up point-to-point if it comes down to it.