NO TRADES!!! Clearing out some odds and ends. All prices include shipping to the lower 48, PayPal is the way to go. I'm in Chicago, on the NW side of the city (Jefferson Park), local deal saves shipping $$$.
Aguilar OBP-3 3 band onboard preamp- taken out of a Roscoe bass . Wired for volume, blend, mids (with push/pull for frequency select) and stacked bass and treble. Per the Aguilar website "The OBP-3 is Aguilar’s most flexible onboard preamp design, providing +/-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."

Everything works, only selling as I prefer the Bartolini preamp Includes pots, nuts, washers, 2 disconnected battery leads, no output jack. Asking $100. SOLD
OBP Preamps
Nordstrand Big Split pickup- EMG 40/Bartolini M4 size (4” x 1.5”), was in the neck position of a 19mm Modulus bass. String spacing is 17.3mm. In very good condition. Plenty of wiring left. Includes pickup, cover and 2 black screws. Asking $75. SOLD

Big Split 5
Bartolini M45MB&T pickups- EMG 40/Bartolini M4 size (4” x 1.5”), neck and bridge paired set Split coil, reverse P pickups. Per the Bartolini website "The xxM45M-B/T is an M4 Soapbar shaped bass pickup for the neck/bridge position. It is 4.00″ / 101.60mm long and 1.50″ / 38.10mm wide. The split coil design features a deep tone.
The pickup is designed for extended string width of 64 to 80mm in low-curvature fingerboards.
The “original series” bass pickups with passive designs. They are cast in epoxy to remove unwanted feedback and microphonics."

xxM45M-B | Bartolini Pickups and Electronics
xxM45M-T | Bartolini Pickups and Electronics
In good condition, they’re Barts so they show some string wear (but nothing serious).Includes pickups only, no screws or springs. Plenty of wiring left. Will not separate Asking $80. SOLD
Bartolini NTMB-918FL 3 band onboard preamp- taken out of a Modulus bass, wired volume, blend, mid and stacked bass/treble. Wired for 18v. Includes pots, nuts, washers, battery leads, and output jack- just connect your pickups and 2 9V batteries and you’re ready to go. Asking $75. SOLD

https://www.bartolini.net/wp-content/uploads/2013/12/NTMB-918fl.pdf
Bartolini NS2TMB18 3 band onboard preamp- taken out of a Modulus bass. Wired volume, blend, mid, stacked bass/treble and active/passive switch. Wired for 18V. Includes pots, nuts, washers, battery leads, and output jack- just connect your pickups and 2 9V batteries and you’re ready to go. I remember everything in this working fine and no scratchy pots or issues, but it’s been awhile, so asking $50. ON HOLD

This is the only thing I could find online, this one does NOT appear to have the Db18.1 buffer attached (which seems to be a common thing).
https://www.bartolini.net/wp-content/uploads/2013/12/Ns2tmb18-Db18.1.pdf
Bartolini 59J1-L/LN pickups- taken off a Modulus Genesis (5 string jazz) bass. Have some wear, the neck one is the worst, but I remember them working fine. Split coils, so no hum. Per the Bartolini website “The 59J1 L/LN is the Fender Jazz Bass® ( J Bass® ) replacement pickup set with a ‘long’ for the bridge and a ‘long neck’ for the neck. NOTE: For J Bass instruments where both the neck and bridge pickup lengths are equal, the ‘long neck’ is especially designed for the neck position. The set is highly respected by musicians and luthiers alike for its deep tone, strong lows, low mids tone. They feature a dual in-line hum-canceling design.
The “original series” bass pickups with passive designs. They are cast in epoxy to remove unwanted feedback and microphonics.
The lengths of the neck and bridge pickups in the original J-basses are not equal. The neck pickup is 3-5/8″ long which is slightly shorter than the bridge pickup which is 3-3/4″ long. Some modern designs, however, use two ‘long’ bridge-length pickups. In this configuration it is important to use the “LN” (long neck) pickup that is specifically designed to work in this position (do not use a bridge pickup in the neck position). Some (very few) use two ‘short’ neck length pickups. Please check the physical size of the pickups you want to replace to make sure the replacements fit properly.”

59J1 L/LN | Bartolini Pickups and Electronics
Will not separate, asking $50. SOLD
Any questions or want more/specific pictures, let me know.
Aguilar OBP-3 3 band onboard preamp- taken out of a Roscoe bass . Wired for volume, blend, mids (with push/pull for frequency select) and stacked bass and treble. Per the Aguilar website "The OBP-3 is Aguilar’s most flexible onboard preamp design, providing +/-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."

Everything works, only selling as I prefer the Bartolini preamp Includes pots, nuts, washers, 2 disconnected battery leads, no output jack. Asking $100. SOLD
OBP Preamps
Nordstrand Big Split pickup- EMG 40/Bartolini M4 size (4” x 1.5”), was in the neck position of a 19mm Modulus bass. String spacing is 17.3mm. In very good condition. Plenty of wiring left. Includes pickup, cover and 2 black screws. Asking $75. SOLD

Big Split 5
Bartolini M45MB&T pickups- EMG 40/Bartolini M4 size (4” x 1.5”), neck and bridge paired set Split coil, reverse P pickups. Per the Bartolini website "The xxM45M-B/T is an M4 Soapbar shaped bass pickup for the neck/bridge position. It is 4.00″ / 101.60mm long and 1.50″ / 38.10mm wide. The split coil design features a deep tone.
The pickup is designed for extended string width of 64 to 80mm in low-curvature fingerboards.
The “original series” bass pickups with passive designs. They are cast in epoxy to remove unwanted feedback and microphonics."

xxM45M-B | Bartolini Pickups and Electronics
xxM45M-T | Bartolini Pickups and Electronics
In good condition, they’re Barts so they show some string wear (but nothing serious).Includes pickups only, no screws or springs. Plenty of wiring left. Will not separate Asking $80. SOLD
Bartolini NTMB-918FL 3 band onboard preamp- taken out of a Modulus bass, wired volume, blend, mid and stacked bass/treble. Wired for 18v. Includes pots, nuts, washers, battery leads, and output jack- just connect your pickups and 2 9V batteries and you’re ready to go. Asking $75. SOLD

https://www.bartolini.net/wp-content/uploads/2013/12/NTMB-918fl.pdf
Bartolini NS2TMB18 3 band onboard preamp- taken out of a Modulus bass. Wired volume, blend, mid, stacked bass/treble and active/passive switch. Wired for 18V. Includes pots, nuts, washers, battery leads, and output jack- just connect your pickups and 2 9V batteries and you’re ready to go. I remember everything in this working fine and no scratchy pots or issues, but it’s been awhile, so asking $50. ON HOLD

This is the only thing I could find online, this one does NOT appear to have the Db18.1 buffer attached (which seems to be a common thing).
https://www.bartolini.net/wp-content/uploads/2013/12/Ns2tmb18-Db18.1.pdf
Bartolini 59J1-L/LN pickups- taken off a Modulus Genesis (5 string jazz) bass. Have some wear, the neck one is the worst, but I remember them working fine. Split coils, so no hum. Per the Bartolini website “The 59J1 L/LN is the Fender Jazz Bass® ( J Bass® ) replacement pickup set with a ‘long’ for the bridge and a ‘long neck’ for the neck. NOTE: For J Bass instruments where both the neck and bridge pickup lengths are equal, the ‘long neck’ is especially designed for the neck position. The set is highly respected by musicians and luthiers alike for its deep tone, strong lows, low mids tone. They feature a dual in-line hum-canceling design.
The “original series” bass pickups with passive designs. They are cast in epoxy to remove unwanted feedback and microphonics.
The lengths of the neck and bridge pickups in the original J-basses are not equal. The neck pickup is 3-5/8″ long which is slightly shorter than the bridge pickup which is 3-3/4″ long. Some modern designs, however, use two ‘long’ bridge-length pickups. In this configuration it is important to use the “LN” (long neck) pickup that is specifically designed to work in this position (do not use a bridge pickup in the neck position). Some (very few) use two ‘short’ neck length pickups. Please check the physical size of the pickups you want to replace to make sure the replacements fit properly.”

59J1 L/LN | Bartolini Pickups and Electronics
Will not separate, asking $50. SOLD
Any questions or want more/specific pictures, let me know.