Bass

ABC

Active Balance Control to eliminate insertion loss

ABCX

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

Active Tone (VLPF)

VLPF active tone replacement potentiometer

B30EQ Control

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

B30EQ System

Designed for contouring the bass, mid and treble frequencies

B64EQ Control

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

B64EQ System

Tighter filter bandwidth and has more of a pronounced effect from each control than the B30EQ

BQC Control

Features a bass and treble equalizer on a concentric (stacked) pot along with the concentric (stacked) mid-control

BQC System

4 knob system features a pre-wired balance control (blend) and master volume with both the bass and treble on a concentric pot as well as the mid-control

BQC System HZ

4 knob system for passive pickups features a pre-wired balance control, master volume, stacked bass and treble and stacked mid-control

BQS Control

Essentially the same as the BQC Control but the bass and treble controls are separate

BQS System

5 knob system features a pre-wired balance control (blend) and master volume with separate bass and treble pots along with the concentric mid-control (stacked)

BQS System HZ

5 knob system for passive pickups features a pre-wired balance control, master volume, separate bass and treble pots, and concentric mid-control (stacked)

BTC Control

Bass & Treble on a stacked pot

BTC System

3 knob system features a pre-wired balance control (blend) and master volume with the bass and treble on a concentric pot

BTC System HZ

3 knob system for passive pickups features a pre-wired balance control, master volume, bass and treble on concentric pot

BTS Control

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

BTS System

System features a pre-wired balance control (blend) and master volume with the bass and treble on separate pots

BTS System HZ

4 knob system for passive pickups features a pre-wired balance control, master volume, bass and treble on separate pots

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