SOLUPEAK 4 Input 4 Output 3. 5mm Audio Switch Box, AUX Switcher, Stereo Audio Selector Box, Line Router Splitter Combiner for Home Audio.

Features: 4IN 4OUT (switch audio sources input(1Switch different input or output conveniently (2No need power supply, plug and play directly (3Circuit design does not affect sound quality (4Made of FR4 PCB circuit board (4Mini size compact audio splitter for home audio Applications: Connect sockets are AUX 1/8 (3. 5mmInput connections: Computer / Phone / Music player. etc. Output connections: Active speaker / Headphone amp / Power Amplifier. etc. Use instruction: Left knob on top: for switch/select input signal way Right knob on top: for switch/select output signal way.