Four zone speaker selector turns on one or all four zones. Connect one pair of speakers or up to all four pairs without damaging your amplifier. Great for multi source control fo the sound in your house and or dwelling .</br>Impedance protection prevents amplifier from damaging low impedance loads. You can connect up to four pairs of speakers to this speaker selector without damaging the amp due to impedance protection circuit .</br>Accepts all standard types of speaker wire up to 14 gauge. Spring loaded terminals hold the bare wire tightly in place to prevent loose connections for years to come.</br>Can be used in conjuction with AVX brand volume controls. If using impedance protection on the speaker selector then you would not use it on the volume controls .</br>This speaker selector by AVX can handle high power | 150watts RMS/channel. 75watts RMS/channel with impedance protection at 8 ohms</br></br>Product Description</br></br><b>FOUR ZONES</b> <br>This item is a four zone stereo speaker selector switch that allows you to distribute an amplified stereo speaker signal up to four listening zones that can be turned on or off.Turn one on or turn on all four zones you control. <br> <br> <b>PROTECTS AMPLIFIER</b> <br> <br> These speaker selectors feature a high current impedance protection circuit. Turn on the impedance protection switch on the front of the speaker selector to prevent the impedance to your amplifier from dropping too low, regardless of the number and impedance ratings of your speakers. This minimizes damage to your amplifier. Even if all 4 speakers are turned on simultaneously the load to your amplifier remains 8 ohms protecting your valuable amplifier.Each zone can be turned on or off manually and more than one zone can be turned on at a time. <br> <b>HEAVY DUTY CONNECTIONS</b> <br> <br> The heavy duty speaker terminals on the back of the speaker selector switch can accept up to 14 gauge speaker wire. Heavy duty spring loaded compression connections help keep trouble free connections for years to come. Simple insertion release design. <br> <br> <b> SPECIFICATIONS:</b> <br> - Number of stereo speaker zones: 4 zones <br> - 150watts RMS/channel. 75watts RMS/channel with impedance protection <br> - Number of connections: 2 red/black IN and 8 red/black OUT <br> - Dimensions: 8-1/2 W x 1-15/16 H x 4-3/8 D inches <br> - Color: Black <br> - Power Required: No <br> - Speaker Wire Size: Up to 14 gauge.</br><br/>http://www.amazon.com/gp/product/B004TBF90C