The MM 4 USB is a player / mixer, which incorporates in its front panel one player and USB reader, SD card function and BLUETOOTH connection. In its interface, the user can navigate through folders and files, and thanks its controls can forward, play and stop the stored media. The MM4 USB is a 4 channel mixer with two EQ controls, one for the control of low frequencies and one for high. Each of the channel has a potentiometer for adjusting the input gain signal and all channels have an input selector in the user.
You can select the signal from 3 connections. In the front, the USB MM4 Jack also has a 6.3mm microphone input, as well as three controls knobs, one for gain level and two for control the EQ. The professional has a comfortable and easy access to the mix between the microphone signal and audio. In the central part of the device, is the crossfader. The user can see the dynamic range of the signal VU meter thanks to its 10 LEDs and controls needed for sending signals to headphone output for proper monitoring and mixing.