The CORE MIX-4USB is a 4 channel DJ club mixer with 12 analogue inputs and 2 independent USB audio interfaces. This makes it easy to connect your laptop and route the audio of your DJ software directly through the MIX-4USB. It has an independent variable fx send for each channel which makes it possible to be creative with external effects. The return is controlled by a short fader. It has 2 microphone channels with a 3 band EQ, talk-over function and an on/off switch to make MC-ing safe and easy for party jocks & MC's. Low tone control on the headphone output makes it possible to adjust your favorite sound. All the pot meters are locked below the surface for extra stability and it has a separate fader print board for easy maintenance. It is equipped with unbalanced and balanced outputs with trim function and a MP3 player-recorder. The MP3 module can record and playback your life performance directly on an USB or SD device.