I purchased this last year to resurrect an old bass. I'm losing my workshop space due to relocation. I won't have time for projects, so here you go. This was never mounted or installed
Following description from the seller I purchased from here on Reverb:
2 Pickup - 4 Knob (VPP-BL-MPP-T/B)
Volume w/Active-Passive Push-Pull -- Blend -- Push-Pull Mid -- Treble/Bass Stack
This kit includes:
Aguilar OBP module
Potentiometers
Stereo Jack
2 Battery Clips
Pre-Wiring Service
This kit does NOT include
Pickups
Knobs
The OBP-3 is Aguilar's most flexible onboard preamp design.
The OBP-3 preamp provides +/-18dB of cut and boost at 40Hz, +/- 16dB of cut and boost at either 400Hz or 800Hz and +/- 16dB of treble cut and boost at 6.5 kHz. The OBP-3 has multiple wiring options, and can be wired with either a push/pull pot OR mini-toggle for midrange frequency selection.

Following description from the seller I purchased from here on Reverb:
2 Pickup - 4 Knob (VPP-BL-MPP-T/B)
Volume w/Active-Passive Push-Pull -- Blend -- Push-Pull Mid -- Treble/Bass Stack
This kit includes:
Aguilar OBP module
Potentiometers
Stereo Jack
2 Battery Clips
Pre-Wiring Service
This kit does NOT include
Pickups
Knobs
The OBP-3 is Aguilar's most flexible onboard preamp design.
The OBP-3 preamp provides +/-18dB of cut and boost at 40Hz, +/- 16dB of cut and boost at either 400Hz or 800Hz and +/- 16dB of treble cut and boost at 6.5 kHz. The OBP-3 has multiple wiring options, and can be wired with either a push/pull pot OR mini-toggle for midrange frequency selection.
