Yeah, 95% chance that's either a fuzz circuit or a tube screamer someone made in their shed
"D" type? Dumble? Distortion? DS? Dimebag?
Heh, probably 95% odds that ANY given OD is a tubescreamer or klon based circuit these days. For fuzz it's gotta be close to 95% either big muff of fuzz face.
If it's a amazing sounding, looking at the controls, my guess would be a homemade Klon.
I thought Fairfield Circuitry looking at the controls and vibe but it’s not a fit so likely a Klone.