The TC Helicon VoiceTone Harmony-M is a vocal effects pedal that is designed for singers who are also keyboard players. The Harmony-M pedal listens to the MIDI input and your voice to follow the music. Harmony-M includes classic "notes" and "chord" harmony control modes. Features 1/4" TRS mic level I/O, as well as input for an optional footswitch so the VoiceTone can be placed on the keyboard for easier access. The TC Helicon Harmony-M has a tone switch for engaging the adaptive live engineer effects that dynamically polish vocal tone by connecting the stereo outputs to the mains. Harmony-M simultaneously gives you 2 backup harmony singers and realistic vocal doubling with effortless MIDI control. Also included are live engineer effects that automatically optimize your vocals with adaptive compression, EQ, and de-essing. All of this is fed into rich reverb and delay processors. While you focus on your music, TC helicon Harmony-M backs you up with fully-produced