The Chapman Guitars Signature Series features guitars forged in the imaginations of some of Chapman's artist roster, like YouTube metal phenom Rob Scallon and Dorje's Rabea Massaad. Rob Scallon has two signature models, a customized ML1 variant 6-string and an extended range 8-string based on the same platform, with ebony-topped mahogany neck-through design and swamp ash wings, loaded with Chapman's custom Passive Aggressive humbuckers with coil split.
Rabea Massaad's signature guitars are based on the ML3 platform, with both a baritone and standard version. Loaded with a custom Chapman Henchmen mini-rail humbucker in the neck and Henchman humbucker in the bridge, the baritone is a hardtail, while the standard has a Wilkinson tremolo 2-point tremolo bridge.
The remaining Chapman Signature model, the ML1 CAP10 America is loaded with Seymour Duncan pickups and a vintage-style, 6-point tremolo bridge, and sports a white pearloid pickguard over its gorgeous sunburst finish.