4-channel audio mixer, with DSP effect unit, integrated MP3 player and Bluetooth receiver. Integrated USB audio interface (will be identified and addressed as an external sound card). Full-duplex USB port (allows for simultaneous recording and reproduction) for reproduction of digital audio data from a PC and for recording mixings onto a PC. 2 mono input channels with gain control, 2-way equalizer and pan pot. 1 stereo input channel with 2-way equalizer and balance control. MP3 player, USB interface, Bluetooth receiver, 16 adjustable DSP effects, adjustable aux return input and FX send output, +48 V phantom power, can be activated as required, adjustable headphone output, stereo LED level display. Power is provided via USB or supplied power supply.