The ATOM Nashville Overdrive is the green side of the Protein Dual Overdrive as a stand-alone unit!
While this circuit originated from the classic ODR-1 circuit, this is far from just being an ODR-1 clone. Browne Amps lowered the gain to make it useable throughout the entire sweep of the knob, adjusted the EQ section to make it less scooped, restored some of the mids and tightened up the low end (to add just the right amount of low mid "beef" back into your tone without becoming muddy). They also redesigned the power section to make it feel more like a tube amp that is working hard! The ATOM is a unique overdrive all on its own.
Imagine an ODR-1 and a Tube Screamer came together and ended the war between them - the strong alliance that would be formed is the ATOM.
The ATOM's uniqueness is found in its ability to transform a thin sounding amp (or amp that has to be quiet and can't be pushed) to feel like an amp that is pushing some air and has some weight to it. This is accomplished by adding the right combination of low mids & mids, as well as giving you a little bit of sag that makes playing a loud tube amp so enjoyable.