Little Mikey is a high gain, clean modular modular voice input module. Equipped with 48V phantom power, condenser microphones can also be connected (48V switch left ON). By using the high impedance option (Hi-Z switch on the left), you can directly input an electric guitar. Others If you push the "-20dB" switch to the left, you can do a pad with a gain of -20dB. "Jack / XLR" specifies which combo jack is used.