ALLOMORPH: STANDARD P/J BASS EDITION
Transform your stock Fender P/J Bass into 25 legendary active, vintage, modern, hollow-body, and acoustic pickup configurations.
OVERVIEW
Allomorph turns your Fender P/J Bass into a versatile tonal chameleon. Instead of modeling an amplifier or speaker cabinet, Allomorph sits at the very beginning of your signal chain (Block 1 on the Darkglass Anagram) to reshape the actual sound, pickup response, and feel of your instrument.
With this pack, your P/J Bass can instantly deliver:
• Classic golden-era '60s and '70s Jazz Bass dual-pickup scoops, S-1 series punch, and singing Jaco growl
• Thunderous Music Man StingRay humbucker punch, hollow mid-scoop, and series bark
• Modern active slap preamps, boutique P/MM hybrids, and cutting multi-scale progressive rock clank
• Vintage '62 Precision Bass warmth, Motown flatwound thump, 1960s Hofner hollow-body violin bass, and Gibson EB-2 semi-hollow rumble
• Acoustic upright double bass resonance for jazz and acoustic sessions
• Pure studio buffer clarity or organic vintage tube-friendly passive warmth
Calibrated specifically for a 34" Standard P/J Bass with both stock split-coil P neck and single-coil J bridge pickups wide open in parallel. Plug in, select a model, and hear your P/J transform into a completely different instrument in real time with zero latency.
RECOMMENDED SIGNAL CHAIN
[Fender P/J Bass]
-> [Block 1: Allomorph Pickup Twin] (Input / Pickup Front-End)
-> [Block 2: Amp / Drive / Preamp] (Darkglass B7K, SVT, B-15, etc.)
-> [Block 3: Speaker Cabinet IR] (8x10, 4x10, 1x15, etc.)
-> [FOH / Audio Interface / DAW]
Why Block 1? Overdrive pedals and amps react directly to the resonant character of your pickups. Putting Allomorph first ensures downstream pedals and amp models distort the authentic scoop of a Jazz pair, the clank of a StingRay, or the bite of an active preamp, rather than a generic DI signal.
QUICK INSTRUMENT SETUP
• P Volume Knob: 100% (Wide Open)
• J Volume Knob: 100% (Wide Open)
• Master Tone Knob: 100% (Wide Open)
Keep both pickups wide open in parallel (or Pickup Blend at Center Detent) for all 25 models—letting you switch between solo neck, solo bridge, and dual-pickup instruments completely hands-free via footswitch. All pickup positioning, pot loading, tone capacitor shaping, and active preamp EQs are handled automatically by the models.
THE 25 DIGITAL TWIN VOICINGS
Jazz Bass Family
01. Jazz Pair Active
The quintessential NYC '70s active slap tone: tight, massive sub-bass and crisp, glassy highs with a 53.3mm bridge-spaced midrange scoop that pops right out of a dense mix.
02. Jazz Pair Open
The golden-era '60s Jazz Bass sound. Transforms your P/J into dual single-coils wide open with that iconic hollow midrange scoop and singing top-end.
03. Jazz Pair Series
Dual Jazz single-coils wired in series (Fender S-1 / push-pull spec). Eliminates the parallel mid-scoop in favor of a hot, muscular humbucking midrange punch that drives tube amps and pedals with authority.
04. Jazz Bridge Growl
The unmistakable Jaco Pastorius tone: delivers that signature singing, vocal bridge growl and burp with full low-end body.
05. Jazz Neck Warm
Solo '60s neck single-coil. Deep, warm, and round with a woody low-end bloom that rivals a P-bass while retaining single-coil openness.
Music Man StingRay Family
06. StingRay Parallel
The iconic Music Man StingRay sound: thunderous low end, aggressive metallic slap clank, and that hollow midrange scoop heard on thousands of hit records.
07. StingRay Series
StingRay wired in series for a hotter, thicker signal with punchy low-mids and an aggressive, in-your-face rock bark.
P/MM Modern Hybrids
08. P∕MM Parallel
Modern boutique session hybrid (Lakland 44-02 / Sandberg California style). Blends the woody warmth of a Split-P neck with the scooped slap bite and sparkling top-end of a parallel Music Man bridge humbucker through an active 3-band preamp.
09. P∕MM Series
Modern active P/MM hybrid with the bridge humbucker switched to series coils. Delivers a punchy, mid-forward humbucker roar and muscular rock authority through the active 3-band preamp.
Rickenbacker 4001/4003 Family
10. Rickenbacker Clank
The quintessential prog-rock clank (Chris Squire / Geddy Lee). Tight, lean low end with biting, aggressive pick attack and cutting upper-mid grit.
11. Rickenbacker Vintage
Authentic vintage 4001 dual-pickup circuit with the 4.7nF high-pass capacitor engaged on the bridge pickup. Combines full-range neck sub-bass with biting bridge clank while eliminating 500 Hz phase cancellation.
12. Rickenbacker Neck
Solo 4001/4003 "Toaster / Hi-Gain" neck single-coil positioned at the 24th-fret harmonic node (210 mm). Scoops the 4th harmonic for a deep, woody fundamental while retaining a glassy 2.34 kHz roundwound presence peak (Paul McCartney / Al Cisneros).
Dingwall Multi-Scale Family
13. Dingwall Bridge
Modern progressive metal tone: razor-sharp pick clank, extreme note clarity, and piano-like low-B definition tailored for drop tunings and heavy distortion.
14. Dingwall Series
The signature Dingwall rotary position (Bridge + Middle FD3n pickups wired in series). Massive low-mid wall of sound with laser-focused multi-scale string tension and aggressive modern rock/metal authority (Nolly Getgood).
15. Dingwall Parallel
FD3 bridge and middle coils in parallel: modern scooped aggression with ultra-fast transient attack, tight sub-bass, and pristine harmonic sparkle.
Gibson Mudbucker & Hollow-Body Family
16. Mudbucker Deep
The legendary Gibson EB-0 solid-body "Mudbucker": a dark, colossal wall of pure vintage bass rumble with zero top-end harshness—pure '60s and '70s British blues-rock.
17. Mudbucker Hollow
1961 Gibson EB-2 / Epiphone Rivoli semi-hollow laminated maple archtop with neck Sidewinder humbucker. Combines massive 30.5" short-scale low end with warm, resonant archtop wood bloom and natural semi-hollow sustain damping ('60s soul and British Invasion).
18. Mudbucker Baritone
1961 Gibson EB-2 semi-hollow archtop with the Baritone push-button choke filter engaged (15.0H inductor + 20nF capacitor). Attenuates sub-bass mud below 200 Hz to focus a snarling, woody midrange rock bark (Jack Bruce / Chris Dreja).
19. Hofner Violin Warm
Iconic 1963 Hofner 500/1 fully hollow violin bass ("Beatle Bass") with Staple Alnico V neck humbucker, "Bass On" rhythm circuit, floating ebony bridge, and low-tension flatwounds. Explosive woody attack thump with fast, blooming hollow-body decay (Paul McCartney).
Acoustic Transducers
20. Upright Piezo
Acoustic upright double bass: transforms your electric bass into a woody, resonant acoustic upright with natural hollow-body pizzicato decay and organic finger feel. Pair with 3 Sigma Audio "Acoustic Upright Standard" AST IRs in your cabinet loader for authentic soundboard acoustic bloom.
Precision Bass & Super P Family
21. Precision Vintage
The gold standard: a vintage 1962 Precision Bass with tone wide open and authentic single-pot 250k loading—transforming your parallel P/J into a pure solo '62 P-Bass without touching your volume knobs.
22. Precision Active
Fender American Ultra II active split-coil P-bass tone with 18V 3-band active preamp. Punchy, articulate, and wideband with authoritative low-end weight and bright transient clarity—built for modern rock, gospel, and mix cutting authority.
23. Dingwall Super P
Dingwall SP1 multi-scale (32"–35") passive Neodymium Dual-P split-coil pickup. Combines fanned-fret low-end tightness with a focused 3.0 kHz passive Neodymium presence peak that cuts through dense mixes without an active preamp.
24. Precision Warm
The legendary Motown flatwound sound (James Jamerson / Pino Palladino). Fat, pillowy sub-bass thump with rolled-off highs that glues the groove together.
P/J Bass Family
25. PJ Active
Modern active P/J punch (Fender American Ultra II style). Combines Ultra II Noiseless split-coil body with Noiseless bridge single-coil cut, boosted by the 18V 3-band active preamp.
LICENSE & DISCLAIMER
License:
Licensed for personal and commercial musical performances, recording, and production. Redistribution, sublicensing, or resale of raw model files or derived profiles without permission is strictly prohibited.
Trademark Disclaimer:
All product names, trademarks, and registered trademarks (such as Fender, Precision Bass, P-Bass, Jazz Bass, J-Bass, Music Man, StingRay, Sterling, Rickenbacker, Gibson, Dingwall, Bartolini, Sadowsky, Spector, ToneStyler, EMG, and Darkglass) are the property of their respective owners. Used solely to identify historical instruments and analog circuits analyzed in this project. Allomorph is an independent project and is not affiliated with or endorsed by any of these manufacturers.
