One Control Butter Yellow Auto Quack

One Control Butter Yellow Auto Quack, Effect Pedal for Electric Guitar and Electric Bass, Envelope Filter / Auto Wah, Specially adapted to the range of electric guitars and electric basses, Two selectable filter ranges (flat and narrow or high and wide), Precise tracking and fast response, Developed by Bjorn Juhl, True bypass, Controls for bias, decay, sensitivity, Side mellow/bright switch selects filter range, Bypass footswitch, Status LED, Aluminium housing, 6.3 mm Mono jack input / output, Power supply via 9 V battery or optional 9 V DC power supply (both not included), 2.1 x 5.5 mm hollow female plug, polarity (-) inside, Power consumption: 3.5 mA, Dimensions (L x W x H): 100 x 47 x 48 mm, Weight approx. 160 g ...