Ampeg Pf500 Schematic Official
This is the hardest part. Ampeg (now owned by Yamaha Guitar Group) does not publicly host an easy-to-find PDF on their main consumer site. However, the schematic does exist in service centers and enthusiast archives.
: A 500W RMS Class D power amplifier (into 4 ohms) that provides high output with minimal heat generation compared to Class AB designs. ampeg pf500 schematic