Fender Engager Booster, Effects Pedal, Booster - EQ, 20 dB Boost, 3-Band EQ with mid-frequency toggle switch, level, bass, treble and middle controls, Latch input and output, Power supply connector, True bypass footswitch, Fender Amp Jewel LED, Power supply via 9 V battery or 9 V DC power supply (not included - matching power supply: Article Nr. #409939#), Power consumption: 50 mA