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 or 1200W of 70V mono power. Reliability – 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.