Mark Holcomb Gear Guide
Periphery guitarist Mark Holcomb’s PRS signature guitars, low tunings, Seymour Duncan pickups, extended-scale models and modern digital rig.
A period-by-period quick reference to guitars, amplification, effects and songs. Gear can vary by recording, tour and year.
Guitars
| Gear / reference | Details | Era / use |
|---|---|---|
| PRS SE Mark Holcomb Custom 24 | Signature six-string with Seymour Duncan Alpha/Omega pickups and 25.5-inch scale. | Touring |
| PRS SE SVN Mark Holcomb | Seven-string signature guitar for extended range. | Periphery |
| PRS Core Mark Holcomb model | USA-made signature with Scarlet/Scourge pickups and Drop C setup. | 2025 onward |
| PRS SE SVN with Evertune | Touring instrument modified for very low G tuning on “Reptile.” | 2023 rig |
| 30-inch PRS baritone | Custom extended-scale guitar used on newer recordings. | Recent sessions |
| D’Addario NYXL strings | String gauges vary with tuning and instrument scale. | Studio/live |
Amplifiers
| Gear / reference | Details | Era / use |
|---|---|---|
| Fractal Axe-Fx II | Modeling processor used for amp and effects presets. | 2010s touring |
| PRS Archon | Tube head in earlier Periphery-associated rigs. | Earlier career |
| Direct modeler setup | Compact modeler-based stage rig with consistent preset recall. | Later touring |
| Peavey Invective / Granophyre | High-gain heads used in Haunted Shores studio work with Misha Mansoor. | Haunted Shores |
Effects and signal chain
| Gear / reference | Details | Era / use |
|---|---|---|
| Seymour Duncan Alpha/Omega pickups | Holcomb’s signature bridge and neck humbuckers for clear low-tuned response. | PRS signature guitars |
| Horizon Devices Precision Drive | Boost/gate pedal used in modern metal signal chains and associated with Periphery’s gear ecosystem. | Touring/studio |
| Fractal amp and cabinet models | Preset-based gain, cabinet and effects processing. | Digital rigs |
| Evertune bridge | Maintains stable tuning on the seven-string configured for very low G. | “Reptile” rig |
| Delay and reverb | Ambient layers and transitions around tight rhythm parts. | Song dependent |
| Low tunings | Drop C, extended-range and very low G tunings drive different guitar choices. | Album dependent |
Song and era references
| Gear / reference | Details | Era / use |
|---|---|---|
| Reptile | Seven-string PRS with Evertune configured for very low G tuning. | Periphery IV |
| Marigold | PRS signature guitars and tightly controlled low-tuned riffing. | Periphery III |
| Scarlet | Holcomb’s signature pickup voicing and seven-string range. | Periphery II |
| The Bad Thing | Low-tuned guitar layers and modeler-based tones. | Periphery III |
| Haunted Shores material | PRS signature instruments recorded with high-gain tube heads. | Void |