Description
Skip the soldering marathon. The Bartolini HR3.2/918 arrives fully assembled with the pots, preamp, and wiring already sorted, so getting active electronics into your bass is a matter of routing and mounting rather than fighting a schematic at 11pm.
At the heart of this harness is Bartolini’s 2-band HR-3.2 preamp, paired with two separate volume controls and a stacked Treble/Bass tone pot doing double duty in a single hole. That layout keeps your control cavity clean while still giving you independent pickup blending and shaping without hunting through a bunch of knobs to find the sound you want.
Because it’s switchable between 9V and 18V operation, you get real flexibility on headroom: run it on a single 9V battery for standard output, or add the second battery clip for 18V and unlock noticeably more clarity, dynamic range, and low-end punch before anything starts to compress or get muddy.
- 2-band EQ preamp (HR-3.2)
- Two individual Volume controls (2 holes)
- Stacked Treble/Bass Tone control (1 hole)
- Includes 2nd battery clip for 18V operation, wiring instructions, and black ring & center knobs for the tone stack
Built and supported entirely in the USA by Bartolini, this harness carries the same reputation for warmth and clarity that’s made their electronics a go-to for luthiers and repair shops alike. Pro Audio Land has stocked Bartolini gear for years, so you’re getting the genuine harness, not a clone.








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