Dayton Audio MA1260 Multi-Zone 12 Channel Amplifier 60WPC The Dayton Audio MA1260 is a freestanding, twelve channel amplifier designed for custom multi-room sound distribution. Its intelligently engineered and versatile design integrates easily into high-end whole house audio systems. Efficient Class D design delivers superior audiophile sound quality and performance. The MA1260 can be stacked with other audio components and includes removable ears for mounting in standard audio racks (2RU). Two common or BUS inputs feed audio signals from standard line-level audio sources to any or all channels. Each of the twelve channels has its own dedicated input and independent level adjustment to provide further flexibility. By simply flipping a single switch, two channels can be bridged to increase the total power output for that zone. This is helpful when extra power is needed in certain areas. Manual, automatic on/off, or triggered 12V input turn-on modes facilitate easy integration into automated systems. For quick and easy troubleshooting of the system, each pair of channels or zones has a bi-color LED to indicate its operational status. Specifications Rated power output per channel: 60 watts into 8 ohms, 100 watts into 4 ohms (1% THD) Bridged output: 170 watts into 8 ohms (1% THD) Circuit topology: Class D ¿ Signal to noise ratio: 100 dB A-weighted Efficiency: 93% Frequency response: 7.5 Hz to 48 kHz ¿ Dimensions: 16.7" W x 4" H x 14.25" D (tabletop configurations) Power requirements: 115/230 VAC, 50 Hz/60 Hz Stand-by power rating: 115V 0.46W.