Feedback Creator The DigiTech FreqOut Natural Feedback Creator allows you to get sweet, natural feedback at any volume, with or without distortion. The FreqOut is perfect for situations where volume must be controlled like in the studio, with in ear monitors, or low-volume performance and practice. However, the FreqOut can also be used at gig volume to focus out-of-control feedback on a preferred harmonic at any stage position. The FreqOut uses a 9VDC power supply to easily integrate into your existing pedalboard. Harmonic Feedback Types: The first five Harmonic Feedback types let you get feedbackat a predictable,repeatable frequency. Feedback is selectable at a sub-octave, 1st, 2nd, 3rd, or 5th harmonic, where harmonic is defined as a multiple of your note’s frequency.For example,the 5th harmonic is 5x your note’s frequency (which is actually 2 octaves above a major third interval of the original note). The Natural Feedback Types: The two Natural Feedback types (NAT LOW and NAT HI)act more like natural feedback does. Using these feedback types, you might get different feedback every time you play the same note.