Description
The M442J takes Bartolini’s beloved 9J passive hum-cancelling Jazz bass coils and repackages them as a squared-off soapbar rather than the usual eared J shape, resulting in what Bartolini calls the 2J Squared quad-coil design. Under the hood, the two J-style coils can be configured to behave as a full dual humbucker or split apart into classic single-coil Jazz territory.
Flexibility is the whole point here. Wire it in series and you get a big, growly humbucker voice with serious output. Switch to parallel and it fattens out while staying focused, similar to running both volumes wide open on a passive J-Bass. Flip to coil-cut and it tightens up into a clear, precise single-coil tone. Every configuration stays completely hum-free, and adding a toggle switch on-board lets you move between these voices on the fly. It’ll work fine without a switch too, but the switch is where this pickup really opens up.
Because the 2J Squared uses blades instead of individual pole pieces, it stays consistent across a variety of string spacings rather than being locked to one layout. The construction includes internal shielding and shielded lead wire throughout, keeping things dead quiet even under stage lighting or noisy studio gear. It’s also built to shrug off sweat without picking up unwanted string noise.
- Passive quad-coil design built from two 9J Jazz-style coils
- Series, parallel, and coil-split modes (switch required for on-the-fly access)
- Blade construction accommodates a range of string spacings
- Internally shielded with shielded wiring for hum-free performance
- Sweat-resistant, noise-controlled build
- Offered in matched Bass (-B, neck) and Treble (-T, bridge) versions for balanced blending
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