DJ Mixer controllers Complete Set: This 4-channel mini audio mixer comes with 2 wireless microphones (built-in receiver 50 meters), features USB 48V phantom power supply, and the interface can be PC, the device for iPhone, for Android, laptop, game console, microphone, guitar, and those can be mixed together by users. This set can meet the needs of home music recording, internet radio, Karaoke, etc.     Studio mixing desks Plug and Play: Use a computer, USB AC/DC power plug, direct power supply for charging. Built-in universal drive, plug in and install it automatically. Easy to use.     Powerful Audio Mixer: This audio mixer supports MP3, WAV, lossless APE, FLAC and other audio formats, recording via USB, connecting to computer to play music recording, individual +48V phantom power supply and UHF switch.     Built-in bluetooth function, support most electronic devices to connect wirelessly with bluetooth function, fast fit. Support U disk mobile storage device, you can store music on U disk and insert games. Smart multi-device compatibility: wireless microphones, power amplifiers, mobile phones, computers, electronic instruments, wired microphones, audio     Potentiometer knob type, non-slip design of concave and convex surface, better feel and more accurate adjustment. Can be connected to wired/wireless/condenser microphones, suitable for KTV home, tuning, network host, broadcast transmission, recording, etc.          Frequency response: 20hz 20 20khz 0.0.5db     S/N Ratio: 80-80db     Max outputs: 4v/max.     Input/Output Impedance:     MIC: 2.4KΩ     Mono: 11KΩ     Stereo: 100KΩ     Parametric EQ:     Hi: 12khz 1515db     Bass: 80hz/1515db     Smart multi-device compatibility: wireless microphones, power amplifiers, mobile phones, computers, electronic instruments, wired microphones, audio     size:175x160x40mm      Material:Metal     colour:Black          Package Contents:     1 x mixer     2 x microphones     4 x anti-skid rings     1 x usb cable          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.