【Product Details】 1 input and 3 output or 3 input and 1 output of LINEPAUDIO products , passive stereo speaker audio switch, is a manual stereo speaker switch, The product adopts all aluminum metal shell material; CNC numerical control surface is treated with oxidation; audio switch provides three sets of signals to select input and output; and saves the reconnection equipment, which is the ideal choice switch. Noise-free switching can be performed between the support for one signal input and three signal selection outputs, or three signal inputs and one signal output. The wide range of applications is suitable for sound comparison between devices with additional stereo input and output. Product features Application of manual 3-level switching between multi-function and multi-equipment. 1 input-3-output or 3-input-1-output operations to achieve maximum versatility. Noise-free switching, fast and simple operation when connecting to put in use. One signal input, manually switch three signal output, In contrast, one signal output, manually switching three signal inputs. The product provides 1/4 Tip-Ring-Sleeve(TRS) 6.35mm socket for easy connection. The product does not need external power supply, aluminum shell is sturdy and durable. The frequency response is 10 Hz to 50 kHz. Net product weight: 336g. Weight after packing: 456g. Product size: length 143mm X width 79 mm X height 45mm. Packing size: length 200 mm X width 180mm X height 55mm. Packing list 1 X 1 input and 3 output or 3 input and 1 output passive stereo loudspeaker audio exchanger comparator.