Description: 8 Groups of stereo speakers can be selected and switched output by buttons (8 groups of speakers can be turned on or off individually), also they can be sounded at the same time, or one group of speakers or multiple groups of speakers can be turned off individually, and the button-type switch can be manually selected. Accepts up to 12 AWG speaker wire with convenient clip-on terminals. Signal input provides power amplifier signal no-load protection function. The input channels support power amplifiers up to 300 watts and all types of speakers from 4 to 16 ohms. The output of each channel manually selects the switch, plug and play, the switching signal is stable, and there will be no interference or noise between channels. Compact design, sturdy metal housing, easy to install, and the product does not require an external power supply. Specification: Item number:B018 material: metal Interface: Snap-in terminal block Connect the power amplifier to the AMP-INPUT position. Connect the speakers to the 1-2-3-4-5-6-7-8 positions respectively. Input: 1 input Output: 8 outputs Power: Input channel support 300W Frequency Response: 10Hz - 50KHz. Product size: LxWxH 335x95x45mm/13.19x3.74x1.77inch Package Includes: 1 Piece Amplifier Speaker Switch Switcher Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!