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 strong power amplifier and loudspeaker distribution device is able to solve the above problems. Features: 8 sets of stereophonic loudspeaker, push-button selection to switch output. 8 sets of loudspeakers can be turned on at the same time, and can be individually turned on or off, manual selection. Signal input provides signal no-load protection for the power amplifier. Adopts convenient snap fastener type wiring terminals, able to accept up to 12AWG loudspeaker wires. Input channel supports up to 300W power amplifier and all types of loudspeakers from 4Ω to 16Ω. Each output channel supports manual selection, stable signal switching, no interference or noise between the channels. Compact design and solid metal shell, simple installation, compact size suits for any system; no need external power supply, plug and play. 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.