Description: 2 in 1 out or 1 in 2 out audio source signal selection, switcher, computer, speaker, audio source, switcher, RCA interface, lossless transmission No need for power supply design, direct plug and direct use, no loss of input and output signals, switching transmission, Mainly used to select a common output device for switching various stereo signal input. If there are two stereo signal sources (such as TV audio, MP3 player, CD player, video game, mobile phone, tablet, computer, record player), the device needs to output to the power amplifier or active speaker. Two sets of stereo source switche, RCA and 3.5mm headphone interface design for input and output, and the switch is designed with manual push-button switch of precise 2 positions. Specification: Name: Audio Source Signal Selector Model:B101 Size(LxWxH) 69mm x 43mm x39mm/2.7 x 1.7 x 1.5 inch Power supply: no power supply required, plug and play Material: all metal case design Input and output impedance: 10 KΩ-50 KΩ Frequency response: 20-20 kHz Distortion: < 0.002% Insertion loss:98dB Input interface: 3.5mm headphone interface(RCA) Output interface: 3.5mm headphone interface(RCA) Input channels: 2 channel stereo input signal sources Output channels: 1 channel stereo output Control switch: 2 gears manual switch Package Includes: 1x Audio Source Signal Selector