Fangrui Product Details [music Mixer Board]the 12-channel Bluetooth Mixer, Built-in Wireless Bluetooth, Reverberation Effect, Comes With Usb Interface, Support U Disk Playback Function. [48v Phantom Power]the Sound Mixer Have 4 Xlr Inputs With Phantom Power. (if 1/2/3/4channel Use 48v Condenser Microphone Need To +48v Button Phantom Power)you Can To Switch 48v Phantom Power And Ultra-low Noise Distortion Enables The Audio Mixer To Be Used With Condenser Microphone. This Compact Dj Mixer Provide Total Dynamic Control Mixer Is Great For High Quality Performance, Live Gigs And Karaoke. [usb Audio Interface / Bt Function ] This Bluetooth Mixer Enables Users To Wirelessly Stream Music From Smartphone. The Usb Interface Can Be Connected To Your Usb Stick/fast Memory/mp3 To . Flash Drive Or Bluetooth Device To Mix And Record. After Pressing The Menu Button,use The Built-in Controls To Play/pause, Skip Tracks And Switch Between Modes. Plug Type:eu Plug,it Applies To Indonesia, Germany, France, Spain, Italy And So On Voltage: Ac100-240