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GMC-STE-BKB Electro-Acoustic Guitar SIGMA

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This Sigma is a performance ready instrument with a versatile sonic-character and on-board Fishman electronics, perfect for the gigging guitarist.

✓ Versatile Solid Sitka Spruce Top Produces Broad Dynamic Range

✓ Mahogany Body Delivers Resonant Warmth & Mid-Range Emphasis

✓ Cutaway Profile For Added Comfort & Easy Access To Upper Frets

✓ Blackburst Finish For An Edgy, Eye-Catching Appearance

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Electro-Acoustic Guitar Sigma GMC-STE-BKB Blackburst


Solid Sitka Spruce & Mahogany Construction

The Sigma GMC-STE-BKB features a solid sitka spruce top, producing a versatile sound that yields crisp and articulate tones, as well as producing a broad dynamic range. In addition, its solid top also delivers focused, clear sound of deep lows, warm mid-range, and bright singing highs.

Sitka's versatile nature enables it to accommodate many different genres and playing styles, from lighter fingerpicking styles, to heavier more aggressive strumming patterns. Its solid sitka spruce top is attached to mahogany back and sides, adding resonance and warmth to the guitar's sonic-character.

The Sigma's mahogany back and sides also deliver a meaty mid-range, producing punchy, woody tones with plenty of depth and complexity that will please most playing styles.


Grand OM-14 Fret Cutaway Body

The Sigma Guitar GMC-STE-BKB features a grand OM-14 fret cutaway body, which is similar in size and proportion to grand auditorium guitars, providing a versatile instrument, well suited to a wide range of genres and playing styles.

With a grand OM-14 fret body combined with its mixture of tonewoods, the Sigma Guitar GMC-STE-BKB produces a full low-end, emphasis within the mid-range, and sparkles within the trebles. Its versatility makes the GMC-STE-BKB able to handle both lighter fingerpicking styles to meatier strumming patterns with ease, perfect for adding a range of dynamics to a player's individual musical style.

Furthermore, the grand OM body also offers a comfortable playing experience due to its curvaceous shape and nipped in waist, providing comfort throughout both seated and standing performances. For added comfort, the GMC-STE-BKB electric-acoustic guitar has a venetian cutaway profile, offering easy access to upper frets and more challenging chords.


Fishman Isys+ Preamp

The Sigma GMC-STE-BKB comes equipped with a Fishman Isys+ preamp system for optional amplified performance, offering tone shaping options for live and rehearsal settings. The preamp features rotary controls for volume, bass and treble, allowing the player to add a little extra sonic-character to the amplified sound. In addition, the preamp also features a phase button that reduces undesirable feedback when plugged in.

As well as all this, the Fishman Isys+ also has a built-in tuner that provides precise and easy tuning whether performing acoustically or amplified.


Mahogany Neck & Micarta Fingerboard

Constructed from mahogany, the Sigma's neck delivers a resonant rich warmth that responds superbly to many different playing styles with equal ease. Additionally, the neck has a low profile shape for added comfort and a better grip in each position up and down the neck.

Furthermore, the neck is topped with a micarta fingerboard which offers a smooth playing experience whilst adding sonically pleasing tones to the guitar's overall sound.


Blackburst Finish

The Sigma Electro-Acoustic Guitar is finished with PU-lacquer and a blackburst colouring, which offers an aesthetically pleasing appearance with an edgy vibe. Its beautifully shaped black pickguard enhances the curvaceous shape of the guitar for added aesthetic appeal, whilst its white striped rosette complements the overall finish and matches the bridge pin dots.

Furthermore, its classic Sigma headstock and chrome hardware stand out beautifully and add the the guitar's overall performance ready appearance.


Real Bone Nut

The GMC-STE-BKB features a real bone nut, which offers excellent resonance and sustain, along with an authentic appearance.

A bone nut also delivers a very balanced tone, and will last a long time. In addition, this type of nut naturally self lubricates and helps you stay in tune for longer.


Sigma Electro-Acoustic Guitar Specifications:


Guitar Body & Bridge

  • Top Material: Solid Sitka Spruce
  • Body Material: Mahogany
  • Body Size: Grand OM-14 Fret Cutaway
  • Total Length: 102cm
  • Body Length: 50cm
  • Upper Bout: 29cm
  • Lower Bout: 41cm
  • Depth: 10cm
  • Bridge: Micarta
  • Finish: PU-Lacquer
  • Colour: Blackburst


Guitar Neck & Fingerboard

  • Neck Material: Mahogany
  • Construction: Dovetail Neck Joint
  • Fingerboard Material: Micarta
  • Fingerboard Inlays: Mother of Pearl Dot
  • Nut Material: Bone
  • Finish: PU-Lacquer
  • Scale Length: 645 mm


Guitar Hardware & Electronics:

  • Hardware Colour: Chrome
  • Tuning Machines: Diecast
  • Pickguard: Black
  • Strings: D' Addario EXP 16
  • Electronics: Fishman Isys+
  • Preamp Controls: Volume/Bass/Treble/Phase/Tuner

Data sheet

Right or Left Handed
Right Handed Guitar
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