The product adopts passive design, direct insertion, and has lossless switched transmission of input and output signals, The product is mainly used to select and switch among a variety of stereo signal input and output through a common set of equipment, that is, a variety of stereo signal sources of devices, such as TV audio, MP3 player, CD player, video game, mobile phone, tablet, computer, record player, need to be output on the amplifier or on active speakers, The 6-channel audio signal selection switcher solves complicated line plug in and plug out, which uniformly connects device input signal sources to the switcher for easily selection. The product uses standard RCA port design for input and output, and uses precise 6-level manual switch design for the switcher, with independent stereo volume adjustment control. Input and output impedance: 10KΩ - 50KΩ Frequency response: 20 - 20kHz Distortion: Less than 0.002% Insertion loss: Less than 0.01dB Signal gain: 0dB Signal to noise ratio S/N:more than 98dB Number of input channels: 6-channel stereo input signal sources Number of output channels: 1-channel stereo output Control switch: 6-level precise manual selection switch Switching channel: 6 channels Net weight: 0.25 kg colour:black Material:metal size:113*50*38mm Package Contents: 1 * 6 input 1 output stereo audio signal selection switcher Only the above package content, other products are not included. Note: Light shooting 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.