2 Pair Speaker Selector Switch Switcher Splitter with Volume Level Control, 300Watt, Impedance Matching Two pairs of speakers can be controlled independently. Any one pair or both pairs can be controlled at the same time or in combination with a volume control. Heavy duty transformer based impedance matching circuitry safeguards your aplifier. Wire terminals will accommodate up to 12 gauge wire. Can be connected to two separate amplifiers via A/B switch. 100 watts RMS, 300 watts peak power handling. Includes optional rack mounting hardware.