Electro-Harmonix HOG Guitar Synthesizer Features include: 10 intervals of pitch can be mixed by using 10 surface faders, which may then be played polyphonically with perfect tracking: 1 octaves down 1 octave + a perfect fifth 2 octaves down 2 octaves up Original pitch 2 octaves up + a major third One Fifth up 3 octaves up 1 octave up 4 octaves up Six unique expression modes are accessible via the Exp button, expression pedal and MIDI. Octave bends, step bends, volume control, user defined Wah-Wah, Filter control, plus two unique freeze modes: With Freeze Gliss, an expression pedal freezes a chord while letting you play over it having your frozen notes gliss to meet your new notes. The Freeze Volume freezes a chord allowing you to control its volume, with an expression pedal, as you play on top of it. An external "whammy" pedal and a momentary surface mounted Exp button, allow for real-time access and manipulation of all of the above expression modes. A new level of performance interaction. Dual Envelope generators that work with both the higher and lower frequency ranges. Allows unique contours of attack and release in two different harmonic regions. 12 dB per octave 2-pole low pass filter and resonance controls manipulate the tone while also being a critical element within the expression modes. Surface Foot access for True Bypass, expression control and envelope engagement. Store performance presets when you use the optional external Electro-Harmonix foot controller.