Bare Knuckle Blue Note HSP90

The Bare Knuckle Blue Note HSP90 is not your average humbucker-size P90. It’s a hand-wound, tone-chasing machine loaded with 42AWG plain enamel wire and a set of roughcast Alnico 2 magnets. That combo alone should get the corksniffers salivating. You want vintage vibe? This thing practically smells like lacquer and tweed.

HSP90s have long promised the best of both worlds: P90 sass in a humbucker footprint. But let’s be real – not all of them hit the mark. They either neuter the mids or pump the lows until it’s just a muddy humbucker in drag. A proper P90 should bark, bite, and push your amp into that sweet edge-of-breakup territory where touch and tone live in sin.

Bare Knuckle ain’t playing the compromise game here. The Blue Note aims for that authentic vintage P90 voice, built with the same obsessive attention to detail that’s made BKP the gold standard for high-end pickups. If you’ve been burned by tone-dead HSP90s before, this is the one that might finally make things right.

Under The Hood

Let’s talk magnets. Alnico 2 has a softer magnetic pull than the punchier Alnico 5 or the tight, focused Alnico 4. It lets the strings breathe. Notes swell and bloom rather than snap and bark. Combine that with the roughcast finish – which disrupts the magnetic field just enough to keep things raw and lively – and you’ve got a pickup that doesn’t just sound vintage. It behaves vintage.

Humbucker-size P90s (HSP90s) have always lived in tone purgatory. Players want the snarl and spank of a soapbar, but they’re stuck with humbucker routes. Some HSP90s play it too safe with overwound coils, compressed response, lifeless mids. The Blue Note doesn’t fall into that trap. It’s not trying to please everyone. It’s aiming for that early ’50s single-coil sag, with all the imperfections that make a great P90 feel like a living instrument.

That’s not just boutique voodoo. That’s deliberate engineering for players who want touch sensitivity, vocal mids, and the kind of dynamic response that turns a clean amp into a living, breathing thing.

Installation: Drop-In Simplicity, Boutique Precision

Installing the Blue Note HSP90 is clean, easy business. It’s a true humbucker-size footprint – no extra routing, no awkward screw spacing, no having to explain to your tech why you “just had to try something vintage.” It mounts to standard humbucker rings and routes like it was born there.

The braided leads keeps it period-correct and solder-friendly. No plastic insulation to melt. You can also order 2-con + screen that also keeps the wiring color code clear, and Bare Knuckle includes solid documentation if you’re the type who doesn’t want to guess which wire is hot at 2am mid-swap.

Let’s not forget: the Blue Note is a true single-coil. One coil, no noise-canceling wizardry. If you’re running it solo in a Les Paul neck, expect a bit of 60-cycle hum, just like the old records. Want silence? Go digital. Want tone? Welcome to the jungle.

Evaluation: Complex Harmonics, Real-World Clarity

Plugged into a clean amp, the Blue Note HSP90 delivers what most “P90-style” humbuckers can’t: midrange detail without the mud. That’s the Alnico 2 and 42AWG enamel wire working together – lower gauss output with a longer, more musical decay. The DC resistance clocks in around 7.5k Ω, which puts it squarely in vintage soapbar territory, not hot-rodded wannabe land.

Chords sound three-dimensional. Pick attack feels immediate but never harsh. There’s air in the highs, but they don’t get glassy or brittle. In the neck position, it has that syrupy, jazz-box sweetness when rolled off, but keep the tone wide open and you’re dipping into the smooth end of Texas blues territory.

Under gain, it’s touch-sensitive and fat. The low-end is tight but full, not flubby. Mids have a vocal-like push like a cello more than chainsaw. Thanks to the roughcast Alnico 2, transients don’t spike or flatten but they respond with a natural compression that breathes with your playing. Open chords stay articulate. Lead lines sustain and sing, with upper harmonics that bloom rather than buzz.

This isn’t a pickup for hiding behind high-gain saturation. It thrives in edge-of-breakup and medium overdrive. Think early ZZ Top, Cream-era Clapton, or a cranked brownface Fender. It rewards dynamic players. If you’re just chugging power chords, you’re wasting its potential – and probably your amp, too.

Specs

Demo

There is no official video demo of the Blue Note HSP90. However… there is one for the regular Blue Note P90. When there is an update, it will be posted here.

Conclusion: For Players Who Know, Not Pose

The Bare Knuckle Blue Note HSP90 isn’t some mass-produced “P90-like” imitation wrapped in humbucker cosplay. This is a no-nonsense, no-compromise true single-coil P90 that just happens to fit in your Les Paul, SG, or superstrat without a router bit in sight.

It’s not quiet. It’s not sterile. It doesn’t try to play nice with every genre. What it does is give tone purists a legitimate soapbar voice without needing to chop up a vintage top. The specs aren’t just marketing candy – they matter: 42AWG enamel wire, roughcast Alnico 2, true single-coil structure, vintage output range, cloth push-back leads. This is a tool, not a toy.

If you’re looking to fake vintage tone on a sterile signal chain, look elsewhere. But if you want that dry honk, that woody midrange, and that holy-grail dynamic response only a proper P90 can offer – without tearing up your top – then the Blue Note might just be your new favorite problem. You don’t try this pickup. You commit to it.

For reference, this Bare Knuckle Blue Note HSP90 pickup set evaluation was conducted with the following: Fractal Axe-Fx II XL+ featuring Celestion Impluse Responses and Fractal MFC-101 MIDI Foot Controller. ADA MP-1 Tube Pre-Amp loaded with Tube Amp Doctor ECC83 Premium Selected tubes, using the ADA MC-1 MIDI Controller. Fryette LX II Stereo Tube Power Amplifier. Physical cabs use are Marshall 1960B, Mojotone British, and Peavey 6505 cabs loaded with Celestion Classic Series Vintage 30s and Classic Series G12M Greenbacks.

Bare Knuckle Pickups Website | Facebook | Twitter | YouTube | Instagram

7 string 16Ω 59 Airbucker Alnico 2 Alnico 3 Alnico 4 Alnico 5 Alnico 8 Bare Knuckle BKP Boot Camp Brown Sound Celestion Ceramic Charvel Custom Shop DiMarzio Dual Resonance Edge EVH Fishman Floyd Rose Fluence Gibson HSP90 Humbucker Ibanez JB Jimmy Page John Petrucci MJ Mojotone P90 PAF Pariah Pickup Seymour Duncan Singlecoil Single Width Speaker Steve Vai Tech Tip Tremolo Virtual Vintage