The Sigma JM-SGE+ Electro Acoustic, Sunburst offers a solid top and D-14 fret slope shoulder body combined with a classic yet sonically-versatile tonewood combination and a built-in Sigma preamp with tuner, perfect for the performing musician. With a solid sitka spruce top and a mahogany body, the Sigma JM-SGE+ produces a broad dynamic range with a clear, powerful response, as well as delivering a rich resonant warmth and plenty of emphasis within the mid-range. Additionally, the Sigma's real bone nut enhances the guitar's tone further by adding more resonance and sustain. Furthermore, the Sigma features a D-14 fret slope shoulder body which is perfectly suited to a wide range of genres and playing styles due to its powerful yet well-balanced response. Its slope shoulder body also offers superb volume and projection with a more mellow tone than guitars with squared shoulders. If that's not enough, this sonically-powerful electro acoustic from Sigma also comes equipped with Sigma's own preamp system and on-board tuner, offering basic sound tweaking for live, studio and rehearsal environments.