EMG BQS System HZ Bass Preamp

5 Knob Layout 3 BAND BASS PREAMP COMPATIBLE WITH MOST PASSIVE PICKUPS ON THE MARKET VARIABLE FREQUENCY KNOB ALLOWS YOU TO DIAL IN YOUR TONE. ADJUSTABLE FROM 100Hz TO 1KHz COMPATIBLE WITH 9 OR 18 VOLTS FREE SHIPPING IN THE USA EXPERT TECHNICAL SUPPORT IN STOCK MEANS IN STOCK ---> DESCRIPTION & TECH The BQS System HZ is a complete control and EQ system for passive bass pickups or EMG HZ pickups. It features a pre-wired balance control (blend), master volume, separate bass and treble pots along with the concentric/stacked mid-control. 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. All knobs included. Layout:3 B