

WAYNE JONES WJA-3B Onboard Bass Guitar PreAmp
WAYNE JONES WJA-3B Onboard Bass Guitar PreAmp
The most significant difference lies in how we set the EQ frequencies and bandwidth, particularly for the low end. Utilizing the proven WJBP EQ design method, we’ve crafted an onboard preamp that stands apart.
- Stacked Volume / Pickup Blend knob
- Treble control with 6 kHz / 10 kHz switchable
- Mid control with 350 Hz / 600 Hz switchable
- Bass control with 44 Hz / 80 Hz switchable
- Active / Passive mini toggle switch
- Runs on single 9V or dual 9V (18V) for more headroom
- Includes both 9V and 18V battery cables
INSTALLATION
Fits most Fender-style Jazz Bass cavities.
Recommended: increase cavity depth by 2–3 mm for optimal fit.
https://www.waynejonesaudio.com/wja-3b-onboard-bass-guitar-preamp/?preview=true
Some models may require minor routing adjustments.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
WAYNE JONES WJA-3B Onboard Bass Guitar PreAmp
The most significant difference lies in how we set the EQ frequencies and bandwidth, particularly for the low end. Utilizing the proven WJBP EQ design method, we’ve crafted an onboard preamp that stands apart.
- Stacked Volume / Pickup Blend knob
- Treble control with 6 kHz / 10 kHz switchable
- Mid control with 350 Hz / 600 Hz switchable
- Bass control with 44 Hz / 80 Hz switchable
- Active / Passive mini toggle switch
- Runs on single 9V or dual 9V (18V) for more headroom
- Includes both 9V and 18V battery cables
INSTALLATION
Fits most Fender-style Jazz Bass cavities.
Recommended: increase cavity depth by 2–3 mm for optimal fit.
https://www.waynejonesaudio.com/wja-3b-onboard-bass-guitar-preamp/?preview=true
Some models may require minor routing adjustments.













