The Classic Series features two distinctive types of models: the traditional Spanish-style nylon-string AC models and hybrid nylon-string CEC models that borrow from steel-string cutaway acoustic-electrics with cutaways, narrower nut width, and Fishman electronics. The traditional style AC models have been re-engineered to improve resonance for an authentic classical guitar sound while the CEC models feature slim body with cutaway, 45mm nut width and electronics for steel-string players who love the nylon-string sound.