Right side is lower gain Zen II, left side is higher gain Robben Ford sounding. I’ve been using the right side as an always on and the left side as a higher gain solo boost. Even at those volume / gain levels, it’s pretty loud and gainy. I’ve liked the higher gain sound much more than I thought I would. Nails the smooth lead sound. I know it’s Robben Ford / Dumble inspired, but reminds me a lot of the 80s Clapton Soldano? sound.