Bogen's M-Class delivers on what professional sound installers need most - Flexibility, Power, and Reliability. Flexibility - 3 modes of operation: Stereo, 70V Mono, or Dual Mono; and 2 modular input bays for a variety of prioritized input types. Power - up to 600W/ch stereo. Massive power toroid and heat sinks; heavy 14-gauge chassis; patented Back-Slope AC voltage stabilization; Clip limiters, DC voltage, over-current, and thermal protection circuits.