The Super Booster it's a +-20dB linear Booster / line driver with three modes: Flat, Bright and Fat. Is super transparent and with a lots headroom (can be used with 18V DC to max headroom). The Flat mode ensures you maximum tone transparency. The Fat mode brings up the subharmonic content and gives you fat low end response without any muddiness, ideal for skinny bottomed guitars. The Bright mode acts as a treble booster so you can clean up your bottom end and push your amp or distortion further. The Super Booster can also lower your instrument's volume down to zero without any frequency loss. As it proved high input impedance, lots of clean headroom and flat frequency response can be used as Line Driver, isolating your guitar from long cables and long pedal lines. Like all the MBS pedals it's built with top quality components and True Bypass switching system with a stage-ready status LED, preserving your instrument's tone when it's not engaged. 2 year warranty.