Bass

ABC

Active Balance Control to eliminate insertion loss

ABCX

Active Balance Control to eliminate insertion loss for a X series pickups

B30EQ Control

Designed for contouring the bass, mid and treble frequencies of bass guitar

B64EQ Control

Tighter bandwidth and doesn't creep into the mid-range as much as the B30EQ

BTC Control

Bass & Treble on a stacked pot

BTS Control

Essentially the same as the BTC Control but instead of a concentric pot, the controls are separate

EXB

Bass EQ for controlling high and low frequency while reducing mids at the same time

VMC

Variable Mid Control for dialing in exactly where you want your mid-range