MP 1800 amplifier is ultra-reliable, high-current power amplifiers designed to work in the most demanding applications. Massive toroidal transformers, automatic, variable-speed fan cooling and a series of advances protection features ensure that MP amplifiers will deliver the ultimate in sonic accuracy under the most rigorous operating conditions. POWER: PER CHANNEL (1% THD) 8 ohms 330 Watts 4 ohms 600 Watts 2 ohms 900 Watts