QSC Audio ISA 450 Professional Amplifier Power Amplifier very professional amplifier and gives out a lot more power than you would think.  single channel @ 8 ohms - 260W / single channel @ 4 ohms - 425W / single channel @ 2 ohms - 700W / Bridged @ 8 ohms - 800W / Bridged @ 4 ohms - 1400W Is in used condition with some rack rash. Typical wear and tear and some rust to the Fan Grill. Collection Only, No Delivery due to weight. Please also check out the other items I have for sale too.