basstib
Junior Member
The old ZX amps and the best amps PG ever built the ZPA boards are 24K gold.A few older pg amps have the golden circuit board. I have an mtx 564 amp, and the circuit board looks pretty nice.
I have a ZPA 0.5 on 2 Kicker L7 15s sounds great.
The ZPA board looks very similar to those Italian boards only the ZPA is much larger and robust from the looks of it anyway.