NXG 6 ZONE SPKR SELECTR W/VOLUME CONTROLS Power handling: 100 watts RMS per channel Frequency response: 20Hz-22kHz 12 position volume controls with 42dB attenuation Automatic impedance protection circuitry Individual on off zone switching Removable screw type connectors accept 14-gauge wire16 3/4" W x 2 1/8" H x 11" D; weight: 10 lbs.Includes room labeling system