The product adopts passive design, direct insertion and lossless switched transmission of input and output signals, The product is mainly used to select and switch between a variety of stereo signal input and output through a common set of equipment, is That is, a variety of stereo signal sources from devices, such as TV audio, MP3 player, CD player, video game, mobile phone, tablet, computer, Record player, needs to be output on the amplifier or active speakers, The 6-channel audio signal selection switch solves the complicated line plug and socket, which uniformly connects the device's input signal sources to the switch for easy selection. The product uses a standard port design for input and output, and uses a precise 6-level manual switch design for the switch, with stereo volume adjustment control. Input and output impedance :10Kohm-50Kohm Frequency response: 20-20 kHz Distortion: Less than 0.002% Insertion loss: Less than 0.01dB Signal gain: 0dB Signal-to-noise ratio S / N: More than 98dB Number Input Channels: 6-Channel Stereo Input Signal Sources Number of Output Channels: 1-Channel Stereo Output Control Switch:Precise 6 Level Manual Selection Switch Channel: 6 CHANNEL Colour:Black Material:Metal Size:83*52*38mm Package Contents: 1 * Stereo Mini Mixer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.