Stone Deaf Q Boost, Effect pedal for electric guitar & bass, Booster, Switchable modern (clean & transparent) or vintage (saturated) pre-amp paired with an adjustable frequency control, Controls: Pre-Amp, freq Boost, LED: effect on, freq boost on, Footswitch: Effect Bypass, Freq Boost Bypass, Input: 6.3 mm jack, Output: 6.3 mm jack, Mains adapter connection: Hollow female plug 5.5 x 2.1 mm, negative pole inside, Power consumption: 65 mA, Power supply via 9 V DC mains adapter (not included in delivery, suitable mains adapter: art. #409939#), True bypass, Dimensions (W x D x H): 72 x 112 x 52 mm, Made in UK@+@+*Note:* Battery operation is not supported