Up to 4 Separate Speaker Pairs to your Stereo System - Support Two Stereo Amplifiers.Accepts Speaker Wires Up to 14- Gauge - Frequency Response: 20Hz-20KHz.Handles 100Watts Per Channel with Speaker Systems that have a Minimum Impedance of 8 Ohms - Dimensions: 16.92- Inches(W) x 3.03- Inches(H) x 6.29- Inches(D).Protection Circuitry Keeps it Running Smoothly.Individual Speaker Volume Control This speaker selector box allows you to play audio to up to four different stereo speaker sets. It easily handles up to 100 watts per channel with speaker systems that have a minimum impedance of 8 ohms. Each input has an on/off switch and an independent volume control. You can also hook up another amplifier. Protection circuitry keeps it running smoothly. Accepts speaker wires up to 14 gauge.