4 Ways R L Stereo o Switcher - Bi-Directional switching splitter for o sharing with active speakers, providing clear and distinct o. Switch Knob - 4-channel switch knob allows easy switching between o input or output. Fully isolated independent circuits ensure each signal remains unaffected by the other three channels. Plug and Play - 4 Ports R L stereo o switcher requires no external power supply, and sound quality is not compromised. Compact Design - 4 Ways o Switcher Splitter measures 11cm x 9.5cm x 4.5cm / 4.33in x 3.74in x 1.77in, features an iron metal case, compact size, and lightweight design suitable for home and office use. Wide Compatibility - L R Sound Channel o Switch Splitter is designed to work with various o amplifiers, DVD stereo speakers, players, game consoles, TVs, headphones, and more. Color: Black Material: Aluminum alloy Size: 11cm x 9.5cm x 4.5cm / 4.33in x 3.74in x 1.77in Package Contents: 1 x RCA o Switcher 1 x o Cable 1 x English Instruction Manual Note: Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement error is +/- 1-3cm.