Music technology has come a long way since the old days of guitar pitch shifting. My old Boss SE50 used to do a grainy sounding single shift but now even my Korg Pandora PX4D does a passable diatonic pitch shift. That's all well and good but for those of us who want better pitch shifting and intelligent key changes, Digitech has raised the bar with their new Harmonyman Intelligent Pitch Shifter. Based on their musIQ technology, the Harmonyman can automatically detect not only the key but the chord progression in order to get you the appropriate harmonies for you to solo with. This will definitely be a must-have, not only for the shredders but also the jazz players who know how to use more than one scale per song.Features:Intelligent Pitch Shifting, based on a groundbreaking new signal processing technology, giving players ultra clean, low-latency harmonies based on one of four user-friendly shifting modes.Unique Key Display, showing the key that the HarmonyMan is currently using for harmonization. When musIQ is enabled, the display will update dynamically in response to the playing. A musically intelligent “Circle of Fifths” layout puts musically related keys (sharing the most notes) beside each other.Independently Selectable Voicings for each harmony, with a wide variety of options, including two intelligent shifting modes, unison/detune, octave up/down, straight chromatic shifts from -12 to +12 semitones, as well as 2 octaves down.Strum Key, allowing players to easily set the key of a song by simply strumming chords (perfect for songs that start with a solo).musIQ Sidechain Input/Thru, which lets a second guitar be the chord recognition source while the Clean Input Guitar signal is shifted to produce harmonies – perfect for bands with both a lead and rhythm guitar player.Voice Memory, allowing players to pre-configure and store up to four different harmony voicings and step through them with the memory advance footswitch.Pre-Harmony Distortion Loop, which lets players place a distortion stompbox before the harmony effect without affecting chord recognition of the Clean Input signal.Built-in Guitar TunerMix Control, programmable control of the mix between the lead and harmony signals.1/4” guitar input with distortion send and return, 1/4” guitar optional Sidechain input and pass-through and guitar ground liftBalanced Stereo 1/4” outputsRugged roadworthy all-metal chassisPower supply included