The Sadowsky Outboard Bass Preamp/DI Pedal contains the same famous circuitry built into every Sadowsky bass. Housed in a small footpedal box for use on the floor, it measures just 4.5" x 4.5" x 2.25" and weighs 1.5 pounds. Just plug your bass into the box and then go from the box to your amp, and/or direct to the board. Controls consist of volume, treble boost and bass boost. The Preamp/DI Pedal is perfect for vintage basses where installation of an onboard preamp would affect the instrument's original condition and resale value. The Preamp/DI pedal is recommended for all passive basses, basses with active pickups, and instruments that have active electronics that can be bypassed. It also works great with all upright bass pickups. Features: Independent Bass and Treble Boost, Active/Passive Footswitch w/ LED, Mute Switch w/ Tuner Out, 1/4" Out, XLR Out w/ Ground Lift Switch, Low Battery Indicator LED, Easy-Access Battery Compartment, Optional AC Adapter, Great for Upright Basses!