Seymour Duncan Jeff Loomis Noumenon 7 Set BK

I installed the Lace Aluma X-Bar 3.5 BK in a 7-string instrument to see how modern Alumitone tech handles low, complex voicings and tight rhythm work. I come from a heavy/prog/djent background, so my priorities were string-to-string clarity, low-end definition and noise-free high-gain performance.

First Impressions

The pickup is featherlight and felt sturdy the moment I took it out of the box - the black anodized finish is discreet and matched the guitar aesthetic without fuss. Physically it fit cleanly into my 7-string route and the wiring was straightforward, and the instant plugged-in test showed a very articulate, focused low end that didn’t sound flabby or indistinct. I could hear a strong top-end presence without harshness, and the near-absence of hum the first time I cranked gain stood out immediately.

Design & Features

The Aluma X-Bar 3.5 is part of Lace’s Alumitone/current-driven pickup family designed specifically for extended-range instruments - the 3.5 designation targets 7- and 8-string setups. On paper the 3.5 X-Bar lists a resistance of 2.4k ohms, an inductance around 17.5 henries and a peak frequency near 2600 Hz, which aligns with how it translates tonally - clear mids and defined highs while keeping the low end tight. It’s available in black anodized finish and is offered for both neck and bridge use, and Lace’s Alumitone construction is noticeably lighter than conventional wound humbuckers.

Playability & Usability

Installation was uncomplicated - the pickup’s shape and mounting screw locations lined up with modern 7-string routings and I had no clearance issues with my bridge. Once installed I found string-to-string articulation to be excellent: low-string chugs stayed tight while harmonic and lead content on the higher strings remained present without being sibilant. The Alumitone approach means you can drive long cable runs with less tonal loss, and in real use the pickup remained balanced across volume and tone settings.

Real-World Experience

Through rehearsals and a couple of tracking sessions the X-Bar delivered consistently usable tones - on clean settings it was surprisingly dynamic and responsive to pick attack, and through high-gain heads it retained note definition in palm-muted djent patterns. Complex chord voicings on the lower strings stayed articulate and didn’t get buried, which made arranging riffs easier; lead passages cut well through a dense mix without needing excessive mid-boost. I did notice it’s not as aggressively mid-forward as Lace’s Deathbar models, so if you want an in-your-face scooped-attack that pushes the mids hard you may prefer the Deathbar, but for clarity and balance the X-Bar is excellent.

The Trade-Offs

The main compromise here is that the X-Bar favors clarity and even response over raw midrange aggression - it won’t provide the same muscular mid push as Lace’s Deathbar if you want an all-out modern metal bridge tone. Also, players who prefer a very vintage, warm, woolly low end might find the X-Bar a touch clinical because it prioritizes definition. Finally, color and finish options are conservative - black anodized is the standard look, which is perfect for stealth rigs but less interesting cosmetically.

Final Verdict

The Lace Aluma X-Bar 3.5 BK is a smart choice for 7-string players who value low-end definition, note clarity and near-silent operation under high gain. I recommend it to modern progressive metal and fusion players who need articulate extended-range performance more than midrange brawn - it’s versatile, lightweight and very usable in both studio and rehearsal settings.