Check the listing for details. Monoprice 6-Channel Speaker Selector. Color: Black, Condition: New. Listed at 47.99 USD. Spread your sounds around your home or business with this Monoprice 6-Channel Speaker Selector! This speaker selector allows you to connect up to six stereo speaker zones. Each zone can be individually toggled on or off with the front panel switch. Built-in impedance-matching circuitry ensures that the overall impedance level to the amplifier does not drop below 5 Ohms, no matter how many speaker zones are selected or how many speakers are in each zone. The impedance-matching protection circuitry can be disabled using a front-panel button, but this should only be done if there is another protection circuit employed or the system is carefully designed to avoid amplifier damage. The unit can handle up to 70 watts per channel with the protection circuitry enabled and up to 140 watts per.