The Alvarez MFA66CE Masterworks OM/Folk Acoustic-Electric Guitar is a professional-grade instrument. It features all solid woods and a high level of refinement from the top bracing to the body finish. Key appointments include the Alvarez SYS650 preamp solid African mahogany for the body abalone and mother-of-pearl inlays real bone nut and saddle and die-cast gold tuners with ebony buttons. This Masterworks folk guitar comes with a deluxe polyfoam case. Alvarez SYS650 designed by B-Band This is a dual pickup system with one undersaddle pickup and a transducer pickup placed under the soundboard. A blend control lets you fine tune the balance between the two.