Makes me wonder if he ever had plans to release his OD circuitry as a separate unit. Probably beneath his dignity.
From what I can tell there are 2, and maybe 3 distinct (or maybe they just caught my ear) Dumble tones. The Std Robben Ford impossible dynamics OD, The Steel String Singer tone - gorgeous, sustainy, bright, cleans, and, the Rock crunch reference standard tone. This one is closer to high gain than the rest but not quite. Trainwreck ish sorta.
All the pedals seem to favor some degree of the Robben Ford tone and that's fine by me.