Pyle Pro PAD30MXUBT is a versatile 3-channel mic-line mixer with a USB audio interface and built-in Bluetooth. It allows you to mix and control audio sources like microphones, instruments, and music players. Connect microphones to XLR inputs, line-level devices to RCA inputs, and use the 2-TK input for stereo sources. With the USB port, you can connect the mixer to your computer for audio playback and recording. Additionally, you can stream music wirelessly from your Bluetooth-enabled devices. The mixer features EQ controls, pan/balance knobs, and a dedicated headphone output for monitoring.