The Dr.J Green Crystal OD is an overdrive pedal made by Dr.J, a line of pedals from Joyo. It sits in the company's Dr.J series alongside other drive pedals such as the Joyo AT Drive and the Joyo Lion's Roar1.
What it does
The Green Crystal OD is a drive pedal, and its distinguishing feature is a two-band EQ section. As the maker puts it1:
"With the high and low frequency controls you can dial in your ideal EQ."1
For a player, that means the pedal gives you separate control over the treble and bass content of the driven signal, rather than a single tone knob. You can cut low end to tighten up a loose, muddy drive sound, or roll back the high control to tame harshness, before the signal continues to the rest of your pedalboard1.
Videos
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Sources (1)
- Green Crystal OD by Dr. J, RockBoard PedalPedia, 2026
