Our stereo speaker distribution center has 4 stereo speaker outputs, which can be independently controlled, and each zone has an on/off switch. It features an A/B source selector, automatic impedance matching, special circuitry to avoid over heating, and a volume control. Its sleek black appearance allows the speaker distribution center to blend with other audio equipment. There is zero power loss in each zone when all four SDC-4VC controls are set at maximum volume. The distribution center will equally distribute the sound to each of the speaker pairs without power loss. It has power handling capability of a 72 watt RMS continuous, 216 watt audio at 8 ohm in any switching mode. Heavy duty screw type connectors are provided on the rear panel to ensure long lasting low loss connections.