Do you have trouble in connecting 2 sets of power amplifier and 8 sets of loudspeakers? Do you have trouble in making 2 sets of power amplifier and 8 sets of loudspeakers to sound at the same time? One b power amplifier and loudspeaker distribution device is able to solve the above problems. How to Use: Compatible with all types of power amplifiers and loudspeakers. Connect the power amplifier to position A and B. Connect the loudspeaker to position 1-2-3-4-5-6-7-8 respectively. Turn on your power amplifier stereophonic equipment; no external power supply is required. Note: Size and color may be slightly different because of manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Black Material: Metal Interface: Snap fastener type wiring terminal Power Supply: No need external power supply, plug and play Input: 2 sets input (wiring terminal) Output: 8 sets output (wiring terminal) Power: Input channel supports 300W Frequency Response: 10Hz-50KHz Item Size: 335 * 95 * 45mm / 13.19 * 3.74 * 1.77in Item Weight: 950g / 2.09lbs Package Size: 35.9 * 15.5 * 6.7cm / 14.13 * 6.10 * 2.64in Package Weight: 1080g / 2.38lbs Package List: 1 * Power Amplifier and Loudspeaker Box Switcher