The EMG VMC is and active variable mid

control EQ Circuit for bass and guitar. Rotate the upper control of

the stacked pot clockwise for boost, counterclockwise for cut. Leave

it in the center detent position for a flat response. Rotate the

frequency knob on the bottom to sweep through the mid-frequency band

(from 100 Hz to 1000 Hz) for even more tonal options. The VMC can be

used in combination with the EMG BT (Bass/Treble) controls as well

as any of the other EMG accessories. Specifications:

IN THE BOX

OUTPUT JACK, BATTERY CLIP SET, AND KNOBS.