< ul >< li >【 Mini Audio Mixer 】 Mini Audio Mixer Stereo Mono 4 audio inputs 1 / 4 - Inch TSR / TS Audio Input Jack for Line Mixer Stereo Mono Switch Compatible Microphone Guitar Volume Amplifier Mixing Knob Audio Output to Small Mixers and Speakers . The SIG light is a signal level light . There is one for each channel . It lights up when a signal passes through the channel and flashes with the signal level .< li >【 Easy and Use 】 Dj mixer great for multiple device inputs 4 - channel audio mixer with independently adjustable colored light knobs and volume knobs for each channel . Each channel has stereo and mono modes , which can be switched freely according to the input source . Stereo sound when pressed , only 1 audio output channel , with independent adjustment knob and colorful lights , supports audio output devices such as speakers and mixers .< li >【 Multifunctionality for a Simplified Setup 】 The power supply interface uses the included TYPE - C power cord and USB 5V power adapter , which can be directly powered by a charger or mobile power supply . No restrictions based on usage [ The power interface uses the included TYPE - C power cord and 5V USB power adapter , which can be directly powered by a charger or mobile power supply ]< li >【 Easy and Use 】 The back of the gaming audio interface is set up multiple audio port . You set up dual PCs for live streaming or plug in different audio devices for audio mixing . Multiple selections meet your needs in different scenarios . Modern design looks great on any desktop and large controls are easy to use and low - profile to avoid snagging on wires , clothes , etc .< li >【 Low - Noise 4 - Channel Line Mixer 】 Mini audio mixer yields the highest sonic quality at all output levels , boasting ultra low - noise operational for outstanding audio performance . No distortion and easy to set up , perfect for mixing 4 line level signals quickly and without complications . 4 - Channel mixer produces highest signal quality even at highest levels , in highest signal integrity .< br >< div > < div > < h2 > Product Description < div > < div > < div > < p > < span > 4 - Channel Wireless BT Streaming Mini Line Mixer with USB Audio Interface - 4 Mono / Stereo Switching Inputs | Ultra - low Noise Design with High Headroom | Built - in USB Sound Card < ul >< li >< span >< span > product type : Four - in - one - out mixer < li >< span >< span > input interface : 6 . 35mm Stereo TRS / Mono TS < li >< span >< span > input resistance : 10KQ < li >< span >< span > Output Interface : 6 . 35mm Stereo TRS / Mono TS < li >< span >< span > Output Impedance : 120Q < li >< span >< span > Frequency Range : 20Hz - 20KHz < li >< span >< span > power supply : AC in 100 - 240V , USB out 5V2A < li >< span >< span > Product Size : 470x70x25mm < div > < div > < p > Four input channels for you to blend various audio sources or instrument down into one channel . You can mixing guitar , electronic drum , MP3 player , phone music together then enjoy the reverb you ’ ve made . < p > The audio mixer 4 channel has four 1 / 4 TRS inputs along with an 1 / 4 TRS output , the channels are stereo not mono . < div > < div > < p > Attention : < p > 1 . MONO : If the audio input is mono , or if you use mono cable for connecting the devices to EITHER the input or output of the mixer , the output will be mono . < p > 2 . STEREO : You will need to use stereo cables ( 2 rings on the tip ) to connect your devices to BOTH the input and output of the mixer , if you want to get stereo output . < p > 3 . Please add a ground noise isolator on the line from your computer to the mixer , if there is humming buzzing noise when mixing the computer and other device audio . < p > 4 . This is a line mixer with 4 inputs 1 output , not a headphone amplifier that has 1 input 4 outputs . Kindly choose the correct version for your need . < div > < div > < p > The rugged metal chassis and compact size enhance durability and portability , while the DC 5V power supply or PC power supply options add flexibility to your setup .