4-Port R/L Stereo o Switcher: Two-way switching splitter for o sharing with active speakers. The 4-channel switch knob provides complete circuit isolation, ensuring each signal remains unaffected by the other three channels. Plug and play; no external power supply required; no impact on sound quality. Supports 2 in 4 out or 4 in 2 out bi-directional switching, with independently controlled output volume. Share a single stereo source with minimal distortion and no o crackle, even at highest volumes. No signal loss when all four ports are connected. Model: GV-AC004A Item: 4 Way Bi-Directional RCA Stereo o Switch Configuration: 2 In 4 Out / 4 In 2 Out System Compatibility: Windows XP Interfaces: Left/Right RCA Jacks Dimensions: Approximately 107 x 92 x 40mm Material: Metal Color: Black Package Contents: 1 x RCA Stereo o Switch Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3cm.