What it does
The Joyo JF-39 Deluxe Crunch is a distortion pedal made by Joyo. Joyo's own product page describes it as bringing "a almighty Crunch distortion", which points at its purpose: pushing an electric guitar into a crunchy, distorted tone rather than a clean boost or a light overdrive1.
Distortion pedals like this one clip the guitar signal harder than an overdrive does, which gives more sustain and a denser, more saturated sound. The name "Crunch" signals where it sits: aimed at the medium-gain, crunchy end of distortion rather than the full high-gain metal territory of pedals like the Joyo High Gain Distortion or the Joyo R-17 Dark Flame.
Joyo's lineup includes several crunch and distortion models. If you are looking at a pedal labeled "Crunch Distortion", check the model number, since Joyo also makes the Joyo Deluxe Crunch and other drive pedals in the same family.
A related pedal with a similar name
A different maker, Udaloff, builds the Crunch Harmonics Injector, which RockBoard's PedalPedia lists as a MOSFET based distortion pedal for electric guitar2. MOSFET transistors are used as the clipping elements in some distortion circuits, and builders choose them for their clipping character, similar to how the Joyo JF-21 Splinter offers a Mosfet clipping mode alongside its stock diode setting. The Udaloff pedal shares the "Crunch" name and the distortion category with Joyo's JF-39, but it is a separate product from a separate maker.
Videos
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Sources (2)
- JF-39 Deluxe Crunch_JOYO, JOYO
- Crunch Harmonics Injector by Udaloff, RockBoard PedalPedia, 2026
