Sorry to revamp the old topic. There is one question I never could figure out. The PS rails on tris amp, and the original leach amp are, at their max +-80VDC. In this case, this amplifier should be able to provide (80*80/4)*0.77 = 1232 Watts RMS. Where I am wrong?
Is this related to the current limiter circuit, the symmetrical topology, the darlingtons, the highest feedback settings?