I don't see the Electro-Harmonix LPB-1 nano mentioned here much... I picked one up this weekend as a stopgap level-balancer to get my Tele up to the level of the humbucker-equipped Strat. Gigged it last night, and... That little sucker is MEAN! Maybe it's just honeymoon, but it seems to me almost as big a bargain as the Bad Monkey. It's a boost, but by no means a "transparent" one. It colors the signal quite a bit, and in a way that REALLY works with downstream overdrives. It seems to have a broad EQ lift in the upper midrange, and perhaps a teeny bit of overdrive on its own. And it's true bypass, small, takes standard 9v - all the things needed to play nice on a pedalboard. Last night was my first gig with a new setup... '68 Dual Showman with just two power tubes into a Weber 12A150, LPB-1, and HAO Rumble Mod were all new to my stage rig. Plus I had my old reliable Keeley Rat and Germ. Best sound I've ever had onstage!