Check the listing for details. 4 way stereo RCA audio switch input signal source switcher selector splitter box. Condition: New. Listed at 75.90 USD. 4 channels stereo RCA audio switch input signal source switcher selector splitter box (Here is the Silver front, black body case) (if you prefer black front, please check my store or email me, same price and same quality, thanks) This SOLUPEAK S1 is a 4-way audio source control designed to accept four stereo audio sources input, such as CD DVD TV PC and select one audio output through the rotary knob on the front of the box.It is a good idea to solve the problem of unplugging and plugging the wires. Product Features: ***2022 Upgrade Version:>>1.Upgrade the immersion gold of the pcb circuit board, Increase the width constraint, and ensure the lossless transmission of the signal. >>2. Using high-quality CMC 816 gold-plated RCA interface, high-brightness brushed CNC solid aluminum knob, sturdy aluminum shell, 6mm thick front panel, beautiful and atmospheric, it is an audiophile level This compact switcher box allows connection of up to 4 stereo sources input and selects 1 audio output through the rotary knob (Note: when 1-in 4-out: 4 outputs are not simultaneously) Suitable for multiple sources signal select or large area or multi-room paralleled amplifier distribution of the same signal playback Use specialized audio rotary switch/Lossless device, easily switch between different audio in or out This is a passive non-powered device. Plug and play Description: (1) Specialized quality audio rotary switch, switch smoothly. (2) Passive product, no need power supply. (3) Quality RCA terminal. (4) Solid aluminum box,durable. (5) CNC Solid aluminum knob, looks nice and durable. Instruction:(1) Simple operation, easy to use, no external power required. (2) Connect the output cables of your different home audio types of equipment to the RCA input on our equipment (on back). rotary the knob on front panel to switch audio output easily. Specification:Size: 110*130*50mmWeight: 650g A note about:like hum, this usually is not needed in most installations , but please read.Audio can be tricky sometimes, especially when multiple devices are connected in same system, it creates audio noise hum...If for this reason, we recommend to connect a Ground Loop isolator on the way that has noise, to avoid or solve noise problems. You can search " Ground loop ioslator" to find one. Connect a Ground Loop Isolator to at least ONE audio source to avoid or solve noise problems. It helps eliminates or reduces possible audio noise problems. Please don't hesitate to contact us if any questions, we will respond immediately, thanks very much!