The P-3A uses 9V AC. The P-1A uses 12V AC. You would have to modify the circuit board to insert DC.
Perpetual Tech. gears
I am interested in buying a set of P1A and P3A combo to use in my car. I am actually competing in an Australian National series for car audio and have been behind the leader for quite some time alredy. would it be a significant upgrade over AA DTI V2 and DDE V3? what is the output from the power supply unit. I have successfully design a 12V power supply for AA if PT use the same sort of voltage then this deal sounded even better, since I don't have to redesign thepower again.