Strymon Compadre, Effects Pedal for Electric Guitar & Bass, High quality analog VCA compressor circuits, Two voicing options: soft / hard compression, Clean or dirty boost circuit with 3 EQ options, Dirty boost option for overdrive, Controls: Boost, Compression, Dry, Level, Switch: Boost EQ: Treble / Mid / Flat, Comp Type: Studio / Squeeze, Boost Type: Clean / Dirty, LED: Boost On, Compressor On, Foot switch: Boost, Comp, Input: 6.3 mm jack, Output: 6.3 mm jack, Volume input for expression pedal: 6.3 mm stereo jack), FAV / MIDI: 6.3 mm stereo jack, Power supply connection: Barrel connector 5.5 x 2.1 mm, negative polarity inside, Current consumption: 150 mA, Power supply with a 9 V DC power adapter (included), True bypass, Dimensions (W x D x H): 102 x 114 x 44 mm, Made in USA@+*Note:* Battery operation is not supported