The full sound and warm tones you get from the STS105, combined with the matte finish on a solid cedar top and 3-ply mahogany back and sides, have made this our bestselling model. The Dreadnought series is the most popular body shape for steel string guitar in the world. Huge sounds, beautiful highs in the upper end and gorgeous lows in the bass. One of the go-to choices for musicians of all styles around the world. Cedar top with mahogany back and sides.