The LEF-3807 Harmonizer from budget guitar effects manufacturer Rowin is a three-mode pitch shifter and harmonizer pedal with a compact, pedalboard-friendly form factor. It can serve up a lush harmony with precise polyphonic pitch shifting as well as a spacey chorus-like detune effect. The Harmonizer has a ±2 octave pitch range, with up to 16 optional parameters that you can select via a dedicated Range dial. A three-way toggle switch that lets you go Up, Detune, and Down, combined with Dry and Wet knobs, give you a very wide range of shifting flavors.



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