sound guality wise i only played the ppi amp on my home system and it souned great with alot of output, almost too much. i was using my astron power supply @ 14v with only 2 channels on some infinity kappas. it sounds stronger than 100 watts. are ppi pc amps regulated or unregulated? i know they are rated at 12v so this might be why. my u.s. amps tuber is a graet sounding amp also, but the ppi is a beast. maybe i will just put it with the rest of the amps laying around my house and wait for another install. i just hate to waste such a graet amp!
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