mtx 7801

1. Product: MTX Thunder 7801 mono subwoofer amplifier. 2. Specs: 400 watts @ 4 ohms, 800 watts @ 2 ohms, 1200 watts @ 1 ohm. Actual measurement is 657 watts @ 4 ohms, 1263 watts @ 2 ohms and 1763 watts @ 1 ohm according to the birthsheet. 3. Description/Condition: I bought this non-working...