Sigma JM-SG45 Slope Shoulder Dreadnought Acoustic Guitar

The Sigma JM-SG45 is a stunning slope shoulder dreadnought that captures the spirit of the iconic J-45 at a fraction of the price. With a solid Sitka spruce top and mahogany back and sides, this guitar delivers a warm, punchy tone with strong projection—perfect for singer-songwriters, strummers, and fingerstyle players alike. Its vintage sunburst finish and slope shoulder body make it a head-turner, both in sound and appearance.

Built for comfort and performance, the JM-SG45 features a low-profile mahogany neck, a Micarta fingerboard, and a 1-3/4" bone nut for easy fretting and smooth chord transitions. Onboard Fishman Sonitone electronics with discreet soundhole controls allow for clean, natural amplification when performing or recording. Finished with Grover nickel open-geared tuners and high-gloss polish, this guitar blends modern reliability with classic style.

Features

• Slope shoulder dreadnought body delivers classic, full-bodied tone

• Solid Sitka spruce top with mahogany back and sides for warmth and projection

• Fishman Sonitone pickup system with Volume and Tone controls

• Low-profile neck and 1-3/4" nut width for enhanced playability

• Includes softshell case for protection and portability

Specs

• Body Size: Slope Shoulder Dreadnought (D-14 Fret)

• Construction: Dovetail Neck Joint

• Top: Solid Sitka Spruce

• Back & Sides: Mahogany

• Neck: Mahogany, Low Profile

• Nut & Saddle: Bone

• Fingerboard: Micarta

• Scale Length: 24.75” (628 mm)

• Neck Width at Nut: 1-3/4” (44.5 mm)

• Tuning Machines: Grover Nickel Open-Geared

• Electronics: Fishman Sonitone (with soundhole controls)

• Finish: High Gloss Vintage Sunburst

• Case: Included (Softshell)

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