SIGMA GUITARS JR12-40E with Case

Essential Information About the JR12-40E Guitar

• Jumbo 12-string: a generous format for a wide, bright, and particularly "chorused" sound, ideal for accompaniment.


• Solid Sitka spruce top: precise attack, good projection and dynamics, perfect for highlighting the brilliance of the 12 strings.


• Rosewood back and sides: deep lows, defined highs, and beautiful harmonic breadth for a rich sound.


• Fishman Sonitone electronics + included case: ready for stage and rehearsals, with the provided soft case SSC-D.

JR12-40E: a Jumbo 12-string designed for "large format" playing

With its Jumbo body and 12-string configuration, the JR12-40E follows the tradition of acoustics made to fill the space. This type of guitar is appreciated for its natural volume, solid low-end foundation, and effortless ability to carry accompaniment. The presence of a solid Sitka spruce top and a rosewood back and sides combination places this model firmly in an approach focused on projection, definition, and harmonic richness, all complemented by Fishman amplification for an easy transition from living room to stage.

Who is it for, and for which styles?

The JR12-40E is primarily aimed at intermediate to advanced guitarists seeking the unique character of a 12-string: a full, shimmering sound with that natural doubling effect that enhances open chords. Motivated beginners can also venture into it, provided they accept the often higher string tension compared to a 6-string and prioritize a comfortable setup.

In terms of styles, it excels in folk, pop, acoustic rock, ballads, and songwriting, where arpeggios and rhythms gain width and depth. In a band context, it helps to thicken the accompaniment without adding effects: ideal for intros, open choruses, and acoustic textures that immediately stand out.

A full and bright tone: the contribution of woods and the Jumbo 12-string format

The solid Sitka spruce top provides a quick response and a great dynamic range: the harder you attack, the more energy the guitar returns, while maintaining clear articulation. On a 12-string, this translates into bright highs and presence that highlights the natural shimmer of the string pairs, especially in arpeggios.

The rosewood used for the back and sides is sought after for its depth and complexity: extended lows, slightly scooped mids, and precise highs, with a very pleasant stereo width sensation. Combined with the Jumbo format, you get generous projection and a "big sound" feel that easily fills a room, with a sustain that enhances held chords.

The mahogany neck contributes to the overall balance by providing stability and a warm midrange, while the rosewood fingerboard and bridge reinforce sonic coherence and a solid feel under the fingers. Finally, the bone nuts promote efficient vibration transmission: sharper attack, better definition, and precise intonation, key points on a 12-string.

Recommended compatible accessories

To get the best out of your JR12-40E, favor a 12-string acoustic guitar string set (bronze or phosphor bronze type) suited to your playing style, as well as a reliable tuner: tuning a 12-string often requires more precision. Picks of various thicknesses also allow exploration of dynamics (thin picks for brightness, thicker for powerful rhythm). An acoustic guitar humidifier is also relevant to preserve the instrument's stability throughout the seasons.

Technical specifications

Model	JR12-40E	Scale length	25.4" / 645 mm
Type	electro-acoustic guitar	Nut width	47.63 mm / 1.88"
Format	Jumbo	Nut material	bone
Configuration	12 strings	Bridge	rosewood
Top	solid Sitka spruce	Saddle	bone
Back and sides	rosewood	Tuners	gold mini oil-bath
Finish	natural gloss	Preamp / EQ	Fishman Sonitone
Neck	mahogany	Case	soft case SSC-D included
Fingerboard	rosewood