SIGMA GUITARS SJR-40E with Case
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Manufacturer Information
Sigma
https://www.sigma-guitars.com
hankins@sigma-guitars.com
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A Jumbo Designed to Combine Acoustic Power and Amplified Versatility
With its Jumbo size and selection of solid woods, the SJR-40E aims for a broad response and immediate presence, while remaining suited to modern needs thanks to its Fishman system. The combination of solid Sitka spruce (AA) and solid Indian rosewood clearly positions it in a "performance" logic: plenty of acoustic projection, and a very effective platform for plugged-in use without altering the instrument's character.
Who Is the SJR-40E For?
This guitar is particularly aimed at intermediate to advanced guitarists seeking an expressive electro-acoustic folk guitar with real volume and bass reserves. The Jumbo format is an excellent choice for styles where accompaniment needs to fill the space: pop, acoustic rock, country, folk, pick playing and energetic strumming. It is also suitable for fingerstyle playing if you like a wide sonic base (solid bass and present harmonics), while appreciating a clear attack.
A Wide, Rich, and Structured Tone
The solid Sitka spruce top (AA) provides precision in attack and excellent dynamics: the guitar responds well to nuances, whether played softly or with more intensity. The solid Indian rosewood back and sides enhance bass depth, harmonic complexity, and the sense of "width" in the spectrum, which perfectly suits the Jumbo format. The result: generous projection, comfortable sustain, and a sound that remains clear even when played hard.
The bone nuts contribute to clarity and definition by promoting a direct transmission of vibrations. On the amplification side, the Fishman Sonitone is appreciated for its natural sound and discretion: it preserves the acoustic identity of the instrument, practical for rehearsals, stage, or direct recording, while maintaining easy handling.
Technical specifications
| Model | SJR-40E | Scale length | 25.4" / 645 mm |
| Format | Jumbo | Nut width | 44.5 mm / 1.75" |
| Top | solid Sitka spruce (AA) | Nuts | bone |
| Back and sides | solid Indian rosewood | Bridge | rosewood |
| Finish | gloss natural | Tuners | open Grover gold-plated |
| Neck | mahogany | System | Fishman Sonitone |
| Fingerboard | rosewood | Case | included SSC-D soft case |
Questions frequently asked
Is the Sigma SJR-40E suitable for strumming and pick playing?
The Jumbo body shape combined with the AA Sitka solid spruce top promotes a clear attack and generous projection. The bass response and dynamic range are well-suited for energetic strumming, pop, acoustic rock, and country.
What woods are used for the body of this electro-acoustic Jumbo guitar?
The top is made of AA Sitka solid spruce, while the back and sides are crafted from solid Indian rosewood. This construction provides deep bass and rich harmonic content.
What amplification system is installed?
The Fishman Sonitone electronics are integrated for amplified use, ideal for rehearsals, stage performance, or direct input.
What is the neck width at the nut?
The nut width measures 44.5 mm (1.75 inches), with a scale length of 645 mm (25.4 inches). The neck is made of mahogany and the fingerboard of rosewood. The nuts are made of bone for clear vibration transfer.
Is a case included with the guitar?
A soft case SSC-D is included. The guitar features a glossy natural finish and gold Grover open-gear tuners.



