Features: 4-Port R/L Stereo Audio Switcher Two-way switching splitter for audio sharing with active speakers 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 and 4 in 2 out bi-directional switching; each output has independent volume control Share a single stereo source with minimal distortion even at highest volumes; no audio crackle No signal loss when all four ports are connected Specifications: Model: GV-AC004A Item: 4 Way Bi-Directional RCA Stereo Audio Switch Configuration: 2 In 4 Out / 4 In 2 Out System Compatibility: Windows XP Interfaces: Left/Right RCA (R/L Jacks) Size: Approximately 107 x 92 x 40mm Material: Metal Color: Black Package Contents: 1 x RCA Stereo Audio Switch Note: The package includes only the items listed above. Other products are not included. Light reflection and differences in display screens may cause slight variations in the color of the item as shown. Measurement may vary by +/- 1-3cm.