The Sigma SDR‑45‑SB is a premium dreadnought acoustic guitar

The Sigma SDR‑45‑SB is a premium dreadnought acoustic guitar with a striking sunburst gloss finish and full, resonant tone. Built with a solid Sitka spruce top and solid Indian rosewood back and sides, it delivers deep lows, articulate mids, and shimmering highs, making it ideal for powerful strumming or expressive fingerstyle. The low‑profile mahogany neck, combined with an ebony fingerboard and bridge, provides smooth playability and lasting sustain. Precision is enhanced with a bone nut and saddle, while Grover open‑gear tuners with butterbean knobs ensure stable tuning and vintage style. Supplied with a softshell SSC‑D case and fitted with D’Addario EXP16 strings, the SDR‑45‑SB is a professional‑grade instrument with classic appeal.

Specifications:

• Body Size: D‑14 Fret (Dreadnought)

• Construction: Dovetail Neck Joint

• Top: Solid Sitka Spruce

• Back & Sides: Solid Indian Rosewood

• Neck: Mahogany, Low Profile

• Fingerboard & Bridge: Ebony

• Scale Length: 25.4″ (645 mm)

• Neck Width at Nut: 44.5 mm (1‑3/4″)

• Nut & Saddle: Bone

• Truss Rod: Two‑Way Adjustable

• Tuning Machines: Grover Nickel Open‑Gear with Butterbean Knobs

• Finish: Polished Gloss Sunburst

• Strings: D’Addario EXP16

• Case: Softshell Case (SSC‑D) Included