Lace Pickups Alumitone Fusion Jazz 251 GP B

I spent several weeks living with the Lace Alumitone Fusion Jazz 251 CP B in a semi-hollow archtop and a maple-thin solid body so I could hear how it behaved across very different instruments and setups. My goal was to see if Lace's Alumitone approach - the aluminum-based, low-impedance design - could actually deliver the warm, full jazz tone I chase while staying articulate when I pushed the amp or used more modern single-note lines.

First Impressions

The moment I plugged in I noticed a cleanliness to the note that felt more amp-like than pickup-like - the Fusion Jazz 251 has a quick transient response and a wide frequency spread that makes chords sit without getting woolly. I expected a more vintage, syrupy humbucker sound but instead found flattering midrange warmth with a clarity that let complex voicings and single-note lines breathe. Physically the pickup felt light and solid in the cavity, and the CP finish looked smart under the strings without being flashy.

Design & Features

The Fusion Jazz 251 is an Alumitone humbucker - that means Lace uses an aluminum exoskeleton and a micro-winding to achieve a current-driven design instead of a conventional high-turn copper coil. In practice this delivers lower DC resistance and lower inductance than many traditional humbuckers while still being voiced to retain midrange warmth. The spec set I relied on during testing shows the neck at roughly 5.0k DC resistance and the bridge at about 6.1k, with peak frequencies and inductance that reflect a bright-but-warm voicing - neck peak around 2343 Hz and bridge around 1800 Hz, inductance roughly 1.4 H neck and 1.78 H bridge. The model I tested was configured in the bridge position (CP B) and came with the tidy Deceptor-style cover option, which helped keep finger noise down and gave a tidy visual aesthetic in the cavity.

Playability & Usability

Installing the Fusion Jazz 251 was straightforward for anyone used to humbuckers, but I did pay attention to pot values and wiring because Alumitone voicing can react differently to electronics than a stock PAF clone. Once in, the pickup cleaned up beautifully with tone control - rolling the tone back gave me rounder, more vintage-adjacent tones, while keeping it full. Dynamics are a standout - I could pull a buttery thumb chord or snap single-note bebop lines with the same pickup and feel the amp respond naturally to my attack.

Real-World Experience

On gig rigs and at home the Fusion Jazz 251 delivered exactly what I wanted for jazz comping - a thick, resonant core that never turned muddy even through a modestly driven tube amp. For single-note soloing it offered excellent clarity and sustain, the notes singing out without sounding brittle or overly scooped. When I pushed the gain to rockier levels it retained definition, though it did not compress in the same way a classic PAF-style humbucker will - that means you get clarity at the expense of that old-school creamy breakup unless you drive the amp or add a pedal to taste.

The Trade-Offs

The Alumitone approach brings a noticeably different personality - you trade some of the vintage, saturated humbucker compression for modern clarity and articulation. If you want raw, mid-scooped distortion straight from the pickup, this is not that pickup - it prefers the amp to shape the saturation. Also, because of the Alumitone wiring and the pickup's electrical characteristics, I double-checked wiring diagrams and pot choices during installation - small changes there had audible results, so a careful setup matters more than with some drop-in pickups.

Final Verdict

After several weeks the Fusion Jazz 251 CP B became a pickup I reached for when I wanted a modern, open jazz voice that still had body and presence - it excels on semi-hollow guitars but also brings useful clarity to thinner-bodied instruments. I recommend it to players who want a contemporary take on jazz humbuckers - those who value note definition, dynamics, and a broad tonal palette - and to players willing to tweak wiring and pots to suit the Alumitone character. If you want classic PAF compression and thick, gritty crunch out of the pickup alone, you might prefer a different humbucker, but for a versatile, articulate jazz-leaning humbucker the Fusion Jazz 251 is a strong choice.