Easy to use, original, and sonically immaculate, these preamps provide players with an uninhibited musicality derived from Carey Nordstrand’s own personal design. With an ideal feature set facilitating their great sound, these units have become popular with high end bass builders who love to install them as standard OEM preamps on their top level instruments. Given that they are available in many prewired configurations, these preamps have become extremely popular upgrades for basses at all levels of quality.

3B-4a - PREWIRED – 3 band bass preamp with volume/volume stack, tone (pull passive), mid (pull frequency switch), and treble/bass stack

Overall gain is 0 to 15db by a trim pot on the circuit board.

Bass +/- 12db @ 50Hz

Treble +/- 12db @ 4khz

Midrange +/- 12db @ 1k with no external capacitors. Add two capacitors as indicated in the table to change the frequency.