Vertex Vertex Boost MKII, Effect Pedal for Electric Guitar, Boost, buffer and volume pedal in one, The boost amplifies the signal without changing the sound, The integrated buffer prevents sound loss due to long cable runs or, multiple effects connected in series, When combined with any expression or volume pedal, the volume can be controlled as with a normal volume pedal (expression or volume pedals are not included), Knob: Level, LED: Effect On, Foot switch: Effect Bypass, True Bypass, Connections: Input (6.3 mm jack) - Output (6.3 mm jack) - EXP (3.5 mm stereo jack) - Power supply connection (hollow plug socket 5.5 x 2.1 mm - negative polarity inside), Power consumption: 16 mA, Power supply via 9 V DC power supply unit (not included, suitable power supply unit: article no. #409939#), Dimensions (W x D x H): 81 x 117 x 46 mm, Made in USA@+*Note:* Battery operation is not supported.@+@+