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  • Body Size: Grand OM-14 Fret, Cutaway
  • Construction: Dovetail Neck Joint
  • Top: Solid Sitka Spruce
  • Back & Sides: Mahogany
  • Neck: Mahogany, Low Profile
  • Nut & Saddle: Bone
  • Fingerboard: Micarta
  • Scale Length: 25.4” (645 mm)
  • Neck width at nut: 1-3/4” (44,5 mm)
  • Tuning Machines: Chrome, diecast
  • Electronics: Fishman Isys+ (with Tuner)
  • Finish: PU-lacquer
  • Strings: D ´Addario EXP16
SKU: GMC-1STE+ Categories: ,
  • Description
  • Reviews (0)


The Sigma GMC-1STE+
is a versatile steel-stringed acoustic guitar with a cutaway.

The body of the Sigma GMC-1STE+ adapts the body construction and size of the Grand OM and additionally offers a massive top of Sitka spruce as well as back and sides of mahogany.

As it features a mahogany neck with a fingerboard made of micarta and a deep cutaway, the Sigma GMC-1STE+ acoustic guitar provides great playability up to the highest fret. The direct and also warm sound of the Sigma GMC-1STE+ can be measured with higher-priced instruments, while the built-in Fishman Isys+ pickup system with tuner perfectly captures the tone of every single string.

The GMC-STE offers a fairly low action and a bright character all around. Zingy highs and punchy mids are in keeping with what we’d hope from a Martin-style OM, but the sense of balance with a resonant low end is still a surprise for a guitar at this price. It feels tactile for fingerstyle folk, rewarding the dynamics of touch and suggesting a guitar that could go the distance with a beginner.

Undersaddle pickups are a compromise by their very nature. But that has advantages when players need to make themselves heard in a full-band sound.

Our Martin-style GMC benefits most from the character of its piezo, and the bass control is useful to shape the low end to taste for different playing applications.
But the qualities of the guitar come through more than one might imagine with high output and far less of the brittle nature
that can surface from electros in this
price bracket.

Since Sigma’s return in 2011, its consistency has been notable and this model adds to that reputation. With the continuing development of manufacturing technology and fierce competition between brands, the GMC- STE+ shows how much value is on offer for acoustic players at the entry-level. We found it to be of a standard that transcends the connotations of a starter guitar – it’s hard to think of a better electro to begin on for the price.

The performance of this guitar further strengthens this company’s commitment to its founding values. It’s also a reminder that this often-overlooked name really should be a go-to for players to try.


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