All the EQ controls and balance control feature center detents. This active EQ circuit for bass guitars works by rotating the control clockwise to boost, counterclockwise to cut. There is a center detent for flat response. The mid-range control has a variable frequency knob that allows you to sweep through the mid-frequency range from 100Hz to 1KHz. This selects the frequency to boost or cut.
For EMG pickups only.
All knobs included.
OPEN BOX ITEM: There is one unit which was opened for the purpose of taking product photos. This preamp has not been installed or used.