A Signature Instrument Devoted to Low-end Versatility
Sleep Token’s enigmatic guitarist IV drives the band’s extremes, shifting from crushing drop-tuned rhythm work to fluid, genre-crossing phrasing without losing a single ounce of definition. Jackson’s Pro Plus Series Signature Sleep Token IV Monarkh SC translates one of IV’s most iconic custom instruments into a production model. Its 30-inch baritone scale keeps heavily down-tuned riffs tight and articulate across 22 jumbo frets, while its EverTune F6 bridge locks the tuning in place no matter how hard you dig in. Additionally, a mahogany body with a maple cap supplies warmth and sustain, paired with a 3-piece caramelized maple set neck and a pale moon ebony fingerboard, which delivers a bright, fast-responding attack that keeps low tunings from blurring. Powering it all, a pair of active Fishman Fluence Open Core humbuckers covers everything from vintage warmth to high-output aggression, with two distinct voices accessible via a single push-pull Volume knob. Wrapped in a Transparent Black Burst finish, the Monarkh SC carries the same deliberate darkness that defines Sleep Token’s sound.
Related Videos: Pro Plus Series Signature Sleep Token IV Monarkh SC Baritone Electric Guitar - Transparent Black Burst
The masked architect behind the design
Few modern metal guitarists cover as much ground as IV. As Sleep Token’s guitarist, he moves between ultra-tight, down-tuned riffing, shimmering cleans, and wide ambient textures, often within a single song, and he has done it entirely behind a mask, known only by a Roman numeral. His specifications drive this Monarkh SC, starting with a 30-inch baritone scale built on a mahogany body with a quilt maple cap that delivers warmth and sustain while extending the platform to keep even the lowest tunings tight and articulate. An EverTune F6 bridge mechanically locks that tension in place, holding each string at pitch through hard picking, hot stages, and humidity swings. Even the finish follows the band’s logic, wrapped in Transparent Black Burst and framed by crisp 3-ply binding, offset by the pale moon ebony fretboard. Striking the perfect balance between subtlety and intensity, it’s a signature guitar that lets the sound do the announcing, just as Sleep Token always has.


Dark looks, dialed-in playability
Beneath the Pro Plus Series Signature Sleep Token IV Monarkh SC’s signature specs sits a serious performance platform. The 3-piece caramelized maple neck is capped in pale moon ebony, a fingerboard dense and rigid enough to sharpen every note’s attack and carrying a show-stopping aesthetic with inky streaks that cut across pale, creamy wood in a pattern no two boards share. The neck’s playability is further enhanced by Jackson’s 12–16-inch compound radius, which rounds at the nut for comfortable chording and flattens toward the heel for clean bends across 22 jumbo frets. This is all supported by a graphite-reinforced dual-action truss rod with a heel-mounted wheel that keeps setup adjustments simple and resists warping from temperature and humidity fluctuations on the road.
Multiple voices, one guitar
Sleep Token songs swing between whispered restraint and total weight, and IV’s guitar has to handle both. Two Fishman Fluence Open Core humbuckers make that possible, built on Fishman’s Fluence Core technology, which packs multiple distinct voices into a single pickup rather than committing to a single voice. At the bridge, that means vintage PAF warmth and character in the first voice, then hot-rodded, high-output aggression in the second. The neck pickup pairs PAF-style depth and warmth with a Fluence original built on exceptional highs, a vocal midrange, and a firm low end. Sweetwater’s metal guitarists reach for the Fluence Open Core set when a rig has to stay dead quiet under heavy gain, since the design sidesteps the inductance problems of traditional wire-wound pickups. A single push-pull Volume knob handles the switching, giving IV — and you — enough range to cover a whole Sleep Token set from one guitar.


Jackson Pro Plus Series Signature Sleep Token IV Monarkh SC Features:
- Sleep Token IV’s signature Monarkh SC, based on the specs of his custom shop baritone
- 30-in. baritone scale puts real tension behind every string for tight, articulate low tunings
- Mahogany body with a maple cap supplies warmth, sustain, and resonance
- 3-piece caramelized maple set neck with graphite reinforcement resists bending and warping
- 12–16-in. compound-radius pale moon ebony fingerboard sharpens note attack across 22 jumbo frets
- Fishman Fluence Open Core humbuckers deliver 2 distinct voices each, from vintage PAF warmth to high-output aggression
- Push-pull Volume knob switches voices without breaking stride
- Active Fluence design runs hum-free and holds its tone across the full volume sweep
- EverTune F6 bridge with custom-tension saddles keeps every string at pitch
- Jackson sealed die-cast locking tuners and black hardware for dependable tuning and understated looks
