Bartolini Preamps

1. •HR 2.2 AP/918 - 3 knob
   

2. 2 band - vol (active/passive p/p), bass/treble stack
   

3. •HR 2.3 AP/918 - 3 knob
   

4. 2 band - vol (active/passive p/p), bass, treble
   

5. •HR 2.4 AP/918 - 3 knob
   

6. 3 band - vol (active/passive p/p), bass/treble stack, mid (p/p mid freq)
   

7. •HR 3.3 AP/918 - 3 knob
   

8. 2 band - vol (active/passive p/p), pan, bass/treble stack
   

9. •HR 4.5AP/918 - 4 knob
   

10. 2 band - vol (active/passive p/p), pan, bass, treble
    

11. •HR 4.6AP/918 - 4 knob
    

12. 3 band - vol (active/passive p/p), pan, bass/treble stack, mid (p/p mid freq)
    

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14. New 3 Band NTMB+FL Preamp, 4 Inline Pots – HR-4.6JFL
    

4 Pots Inline: (Volume) (Blend) (Push-pull Mid) (Treble/Bass Stack) > HR-4.6J/918FL - Active or HR-4.6APJ/918FL - Active/Passive

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4. •HR 4.7AP/918 - 4 knob + switch
   

5. 3 band - vol (active/passive p/p), pan, bass/treble stack, mid, 3 way mid switch
   

6. •HR 5.2AP/918 - 5 knob
   

7. 3 band - vol (active/passive p/p), pan, treble, bass, mid, mid (p/p mid freq)
   

8. HR 5.3AP/918
   

9. 5 knob plus toggle
   

5 Pots, 1 Toggle: (Neck Volume) (Bridge Volume) (Treble) (Mid) [Mid Toggle] (Bass) > HR-5.3/918 - Active or HR-5.3AP/918 - Active/Passive

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3. •HR 5.4AP/918 - 5 knob + switch
   

4. 3 band - vol (active/passive p/p), pan, bass, treble stack, mid, 3 way mid switch
   

Bartolini Pre-Wired Harness

We offer a wide selection of pre-wired harnesses to fit your needs. They vary by number and configuration of volume and tone controls, 2-Band or 3-Band EQ, and active/passive options.

Pre-Wired Harness: 3-band EQ, Volume (with Active/Passive push-pull switch) & Treble/Bass Stack – Mid (w. 2 freq push-pull)

Pre-Wired Harness: 3-band EQ, Volume (with Active/Passive push-pull switch) & Treble – Mid  (w. 2 freq push-pull) -Bass

Pre-Wired Harness: 3-band EQ, Neck Volume/Bridge Volume Stack & Treble/Bass Stack – Mid  (w. 2 freq push-pull)

Pre-Wired Harness: 2-band EQ, Volume  (with Active/Passive push-pull switch) & Treble/Bass stack

Pre-Wired Harness: 2-band EQ, Volume (with Active/Passive push-pull switch) & Treble – Bass

Pre-Wired Harness: 2-band EQ, Volume – Blend & Treble/Bass stack

Pre-Wired Harness: 2-band EQ, Volume (with Active/Passive push-pull switch) – Blend & Treble/Bass stack

Pre-Wired Harness: 2-band EQ, Volume (with Active/Passive push-pull switch) – Volume & Treble – Bass

Pre-Wired Harness: 2-band EQ, Volume – Blend & Treble – Bass

Pre-Wired Harness: 2-band EQ, Volume (with Active/Passive push-pull switch) - Blend & Treble - Bass

Pre-Wired Harness: 3-band EQ, Volume – Blend & Treble/Bass Stack – Mid  (w. 2 freq push-pull)

Pre-Wired Harness: 3-band EQ, Volume (with Active/Passive push-pull switch) – Blend & Treble/Bass Stack – Mid  (w. 2 freq push-pull)

Pre-Wired Harness: 3-band EQ, Volume – Blend & Treble/Bass Stack -Mid (+ 3 freq toggle switch)

Pre-Wired Harness: 3-band EQ, Volume (with Active/Passive push-pull switch) – Blend & Treble/Bass Stack -Mid (+ 3 freq toggle switch)

Pre-Wired Harness: 3-band EQ, Volume – Blend & Treble – Mid  (w. 2 freq push-pull) – Bass

Pre-Wired Harness: 3-band EQ, Volume (with Active/Passive push-pull switch) – Blend & Treble – Mid  (w. 2 freq push-pull) – Bass

Pre-Wired Harness: 3-band EQ, Volume – Volume (Active/Passive push-pull switch on 2nd. Volume knob) & Treble-Mid (+ 3 freq toggle switch) – Bass

Pre-Wired Harness: 3-band EQ, Volume – Blend & Treble-Mid (+ 3 freq toggle switch) – Bass

Pre-Wired Harness: 3-band EQ, Volume (with Active/Passive push-pull switch) – Blend & Treble-Mid (+ 3 freq toggle switch) – Bass

Magnetic and Piezo Buffer/Pre-amp with 25K blend pot and adjustable gain trim pot for the magnetic channel.

Tone Control Module with very wide range of boost of the bass, midrange, and treble spectrum.

Adjustable Gain Buffer/Pre-amp with 0 to ~12dB gain, 9v or 18volt operation

Adjustable Gain Dual-channel Buffer/Pre-amp with 0 to ~12dB gain, 9v or 18volt operation

3-band Tone Control Pre-amp with fully independent bass, midrange, and treble

2-band Tone Control Pre-amp with fully independent bass and treble

Bartolini Preamps - Frequently Asked Questions

Q: Do Bartolini Preamps come with potentiometers?

A: Yes, all of the Bartolini preamps that we sell come with with pots and switches already prewired into the harness.


Q: Do Bartolini Preamps come with knobs?

A: Sort of....Bartolini only includes knobs for the concentric (stacked) pots - if there is a stacked pot in the particular harness you are purchasing. These are black, hard plastic knobs. We do carry knobs here.


Q: Do Bartolini Preamps work with Passive Pickups?

A: Yes, that is what they were designed for.


Q: What is a prewired harness?

A: Prewired harnesses have the potentiometers and switches (if applicable) wired to the preamp modules as well as to a battery terminal and a jack. In most cases, the only connections that will need to be made are connecting the pickup wires to the pots and ground.


Q: Do the controls have to be in the locations shown in the layout diagrams?

A: No, Bartolini has left a bit of slack in the wires to allow for some flexibility in the layout of the controls.


Q: What are the frequency centres for the EQ controls?

A: Bass - 30 HZ (+/-14db) | Mid - 250, 500, 800 Hz (+/-10db) | Treble - 10 KHz (+/-16db)
Preamps with a push/pull mid selector allow for changing between 250 and 800 Hz. Preamps with a switch allow for changing between 250, 500 and 800 Hz.

Customer feedback;

Submitted on the 3rd June by Pete who purchased a Bartolini pickup and preamp

Hi Mark,

Just wanted to drop you a quickie to say thanks for the help choosing the 9CBJD L1/S1 Barts for my warwick Thumb.

Paired with the U-retro I couldn’t be happier, they’ve brought the Bass to life. Balanced tone across the fretboard now and a lot more going on in the tone.

Many thanks and all the best,

Pete Black.

Available now - KZ 5 Bartolini upgrade kit, comprising of a pair of MTD tuned Bartolini xxP25CX pickups and the MTD/Bartolini tuned 3 band preamp with push/pull mid select and active/passive push pull on the volume. list £400 (Knobs not included)

XXP25C - Deep Tone, Quad Coil Humbucker

String width covered is 68mm to 80mm on medium curvature fingerboards.
Screw Holes 1:1. *4 conductor wiring.

P2 Shape Dimensions

Length = 4.25 Inches (108mm)
Width   = 1.25 Inches (32mm)