Man, as a boost, this thing makes an old tube amp sing. With a moderate amount of germanium bias crankage and a healthy boost, the tone is killing.
I have been comparing a 4-knob TC Spark, TC Mojomojo, Keeley Super Phat Mod, Bass Soul Food, my beloved Fifth Gear v2 and my new favorite overdrive, the Jam Lucydreamer Bass. Phat Phuk B + Lucydreamer is my new ultimate combo. The PPB has the best low-end of any booster or OD that I've played. And the clipping is unique to any other pedal I know, and is closest to the sound I have in my head of what a low-gain OD bass signal should sound like. Add that to the LD's huge gain range and versatility through its mix and tone knobs, and they are a serious match. Two great tastes that go great together. Didn't think it possible, but Fifth Gear is going on the shelf.