Feedback is part of the electric guitar language: infinite sustain, singing harmonics, notes that "take off" as soon as you push the amp. The problem is that in practice, this sound depends on volume, stage position, the speaker cabinet, and quickly becomes unmanageable when you need to keep it discreet (booth, home studio, in-ear monitors, small stages).
The DigiTech FreqOut addresses exactly this point: it enhances a selected harmonic based on your input note to generate credible feedback without requiring excessive volume. The result: you keep the musical intention of feedback, but with control and repeatability suited to current setups (amps, pedals, modeling).
The FreqOut is aimed at guitarists (and more broadly electric instrumentalists) who want to add sustain and controlled harmonics without relying on volume. It is particularly relevant if you play in studio, with a low-level amp, an attenuator, amp simulation, or if you need to avoid uncontrolled feedback on stage.
Regarding styles, it naturally fits in rock, blues, metal, post-rock, and ambient: note holding, phrase endings that soar, drones, leads that "sing". In practice, it can also become a sound design tool to create swells, transitions, or "electronic bow" type effects on isolated notes, even on a very crowded pedalboard.
The handling is immediate: you adjust the Gain to dose the feedback intensity (from a slight quiver to very marked sustain), then the Onset knob to decide how fast the feedback "arrives" after the attack. This is one of the pedal's key points: you can get almost instant feedback for expressive leads, or a slow rise for more cinematic textures.
The Type selector offers 7 types: Sub (feedback one octave below), 1st (unison), 2nd, 3rd, 5th (fixed, predictable, and easy-to-repeat harmonics), as well as Nat Low and Nat High for a more organic reaction, close to a real guitar-amp pair, with possible variations from take to take.
Two switches complete the arsenal: Dry On/Off (keep or cut your dry signal during the effect) and Momentary/Latching. In Latching, the FreqOut behaves like a standard pedal (on/off). In Momentary, the effect is active only while you hold down the footswitch: ideal to "catch" a harmonic on a precise note, punctuate a riff, or trigger feedback only at the end of a phrase. A front LED indicator also allows you to visualize activation and onset progression.
Note on effect order: since the pedal builds its behavior from the cleanest possible guitar signal, it often performs best at the start of the chain (before modulation and delays), while remaining usable in other configurations depending on your rig.
The FreqOut aims for a natural sound: the feedback doesn't sound like a simple pitch shifter slapped over the signal, but like a note that "responds" and takes over, with a sensation of sustain and control. Fixed harmonic types allow targeting a precise frequency (useful in studio and for doubling lines), while the Natural modes bring a more realistic unpredictability, with behaviors reminiscent of the interaction between mic, amp, and position.
The dynamics depend directly on your playing and settings: a sharp attack triggers faster, onset adjustment lets the note breathe, gain moves from subtle feedback to a very present effect. It's a pedal that can stay musical even in a very clean set, but becomes particularly thrilling with overdrive or distortion (before or after, depending on the desired effect). Among musicians known to use this type of tool on pedalboards are Andy Summers, Mike Kerr, Nick Reinhart, Doyle Wolfgang von Frankenstein, Aaron Marshall, and Mike Stringer.