SIGMA GUITARS GJM-1E Metallic Black
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Manufacturer Information
Sigma
https://www.sigma-guitars.com
hankins@sigma-guitars.com
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A Modern Grand Jumbo, Between Acoustic Tradition and Stage Needs
With its Grand Jumbo body, the GJM-1E fits the spirit of large acoustics designed to effortlessly fill the sound space. The combination of a solid Sitka spruce top and mahogany body aims for an effective compromise: clarity and responsiveness from the top, warmth and presence in the midrange from the body. The black sparkle finish adds a strong visual signature, designed to stand out under the lights.
For Whom and Which Styles?
The GJM-1E is particularly suited for intermediate to advanced guitarists seeking a comfortable acoustic for rhythm playing and reliability when plugged in. Its format and volume reserve make it comfortable in pop, acoustic rock, folk, and vocal accompaniment, especially for energetic strumming, while maintaining definition for fingerpicking.
Sound
The solid Sitka spruce soundboard delivers a clear attack and good note separation, with a response that gains richness as you play. The mahogany back and sides smooth out the upper spectrum and reinforce the midrange, helping the guitar stay clear in a mix. The Grand Jumbo format favors strong projection and a sense of sonic width, appreciated in accompaniment. When plugged in, the Fishman Presys II EQ allows quick balance adjustments to suit an acoustic amplifier or PA system, and the built-in tuner simplifies tuning changes during playing situations.
Technical specifications
| Format | Grand Jumbo | Nut width | 44.5 mm / 1.75" |
| Top | solid Sitka spruce | Nuts | bone (headstock nut and saddle nut) |
| Back and sides | mahogany | Tuners | oil-bath, chrome finish |
| Finish | black sparkle | Preamp | Fishman Presys II |
| Neck | mahogany | Feature | built-in tuner |
| Fingerboard | micarta | Model | GJM-1E |
| Scale length | 25.4" / 645 mm | ||
Questions frequently asked
What kind of sound does the Grand Jumbo body of this guitar offer?
The solid Sitka spruce top provides a clear attack and good note separation. The mahogany back and sides enhance the midrange and smooth out the high frequencies.
Is the SIGMA GUITARS GJM-1E Metallic Black suitable for stage use?
The Fishman Presys II preamp allows balancing on an acoustic amplifier or PA system. A built-in tuner facilitates quick tuning changes during performance. The metallic black finish is designed to stand out under stage lighting.
What is the nut width of the GJM-1E?
A nut width of 44.5 mm is paired with a 645 mm scale length, featuring bone nuts at the headstock and bridge.
Which styles is the GJM-1E suited for?
The Grand Jumbo body shape promotes strong projection, ideal for strumming in pop, folk, and acoustic rock. Its preserved clarity in fingerpicking also suits vocal accompaniment.
What woods make up the SIGMA GJM-1E?
Mahogany is used for the back, sides, and neck. The fingerboard is made of micarta, while the top is solid Sitka spruce.
