Features: 4-Port R/L Stereo Audio Switcher: Two-way switching splitter for audio sharing with active speakers. The 4-channel switch knob provides complete circuit isolation, ensuring each signal remains independent and unaffected by the other channels. Plug-and-play operation; no external power supply required; no degradation of sound quality. Bi-directional switching: supports both 2-in/4-out and 4-in/2-out configurations; each output features independent volume control. Enables sharing of a single stereo source with no audio crackle and minimal distortion, even at maximum volume. No signal loss when all four ports are connected. Specifications: Model: GV-AC004A Item: 4-Way Bi-Directional RCA Stereo Audio Switch Configuration: Supports 2-in/4-out and 4-in/2-out Interfaces: RCA (R/L) jacks Dimensions: Approximately 107 x 92 x 40 mm Material: Metal Color: Black Package Includes: 1 x RCA Stereo Audio Switch Note: Color may vary slightly due to lighting conditions and screen settings. Dimensions are subject to a tolerance of ±1–3 cm.