automatic translation The most important features of Duplicator: three voice duplication styles three reverb styles: Room, Club, Hall transparent correction of intonation optional battery operation (4 x AA) low-noise mic preamp with phantom power (+ 24V) automatic gain control Mic Control - the ability to remotely turn the harmonizer on and off with an optional MP-75 or MP-76 control microphone metal housing USB connector for communication with a computer using the free VoiceSupport program