7 Channels Input The Mini Mixing Console is great for multiple devices connectivity.5 XLR Lines input jack to connect mics or guitar, 1/4 Jack(6.35mm) INSERT and LINE mic inputs in channel 1/2. The INSERT inputs provides the ability to mix microphone audio and instrument like guitar/piano/keyboard. Multiple XLR/1/4" combo audio LINE/mic inputs, 1/4Jack(6.35mm) mono/Stereo Inputs in channel 6/7input and 1pair 1/4" AUX/EFFECT output. USB Audio Interface /BT Function*This Bluetooth mixer enables users to wirelessly stream music from iPad/smartphone.*USB interface can be connected to your U stick/fast memory/MP3 to play music. It has built-in control like Play/Pause/switch songs and Modes. This recording interface can also record to PC/iPad/Phone/USB stick with compatible adapters.The control Play/Pause/switch songs is the spin button,***CANNOT use USB and Bluetooth at the same time.