Ideal in situations where up to 10 pairs of speakers are to be connected to a single amplifier, and individual on/off selection is required. Additionally, a two-position source selector allows global selection from two different source systems. High-powered non-inductive resistors ensure that the speaker load never falls below 4 ohm, even when all ten pairs of speakers are operating. Heavy-duty rocker switches are rugged enough for commercial use, while remaining suitable for residential applications. Detachable terminal strips accept up to 14AWG wire. The rugged steel panel is intended for 19" rack mounting, and occupies two rack spaces.