Monoprice SS-4 Premium 4-Channel Speaker Selector.This impedance-matching speaker selector allows a single amplifier or receiver to safely connect and control up to four pairs of speakers. Includes original box, foam inserts, and quick installation guide as shown.

Unit appears to be in excellent cosmetic condition with minimal signs of handling. All front panel zone selection buttons and rear speaker terminal blocks are present. Please review photos for exact condition and included items.