The Washburn N4 is an electric guitar model, developed in collaboration between Nuno Bettencourt, Washburn and the Seattle-based luthier Stephen Davies. Since its introduction in mid-late 1990, it became Nuno Bettencourt's main guitar and it is marketed by Washburn as Nuno Bettencourt's signature model. The N4 is the flagship of the Washburn N-series which, as of 2008, includes the N1, N2, N3, N4, N5, N6 and N8 (no N7 to this date, N8 being an "N4 times 2" since it's a double neck guitar).
N4 features a distinctive superstrat form-factor, two humbucking pickups, floating tremolo system and enhanced bolt-on neck joint named Stephen's Extended Cutaway, a patented design that allows easier player's access to higher frets.
Since 1990, there have been numerous versions of this model using various woods and hardware parts.