Description
Bartolini has been the benchmark for bass tone out of San Luis Obispo, California for decades, supplying pickups and electronics to top luthiers and repair shops alike. Everything they build is manufactured and supported entirely in the USA, and Pro Audio Land has carried their catalog as an authorized dealer for years because it simply delivers.
The HR-5.2/918 harness takes that reputation and hands it to you pre-assembled. Instead of hunting down a wiring diagram and hoping your solder joints hold up, you get Bartolini’s proven 3-band preamp already mated to high-quality, smooth-feeling potentiometers, ready to mount and go. It’s the kind of shortcut that saves an evening of frustration without cutting any corners on tone or build quality.
Control layout is straightforward once it’s in your instrument:
- Two-hole Volume section: Volume and Blend
- Three-hole Tone section: Treble, Mid (with 2-frequency push-pull switching), and Bass
Additional specs:
- 3-band EQ configuration
- Volume controls: Volume – Blend
- Tone controls: Treble – Mid (2-freq push-pull) – Bass
- Runs on 9V or 18V (18V option includes a second battery clip)
- Wiring instructions included
Whether you’re upgrading a workhorse bass or finishing a build, this harness gets Bartolini’s signature clarity and headroom into your instrument with minimal downtime on the bench.







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