SIGMA GUITARS St Series Omm-St
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Manufacturer Information
Sigma
https://www.sigma-guitars.com
hankins@sigma-guitars.com
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SAICO SAS
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The Orchestra Model Format: A Benchmark for Balance
The "Orchestra Model" format has become a favored standard among guitarists seeking a versatile acoustic guitar that is both comfortable and expressive. With a body designed to offer clarity without excessive bass, the OMM-ST fits this philosophy: an instrument well-suited for fingerstyle playing as well as light strumming, with a natural presence in the mix.
For Which Guitarists and Styles?
Thanks to its size and balanced response, the OMM-ST is very suitable for beginner to intermediate guitarists looking for a serious and evolving guitar, as well as for experienced musicians seeking a reliable acoustic for frequent playing. It excels particularly in folk, pop, blues, vocal accompaniment, and fingerstyle, where definition and nuance make the difference. The 44.5 mm nut width also facilitates comfortable finger placement for enriched chords and arpeggios.
Sound
The solid Sitka spruce top delivers a clear attack, good projection, and a wide dynamic range: the more you play, the more the instrument responds with precision. The mahogany back and sides enhance the midrange and provide a warm character, with a quick response that highlights clean rhythms and picked notes. The mahogany neck contributes to a feeling of stability and natural sustain, while the bone nuts improve vibration transmission between the strings and the body, resulting in a richer and more defined sound.
Technical specifications
| Model | OMM-ST | Neck | mahogany |
| Format | Orchestra Model | Fingerboard | micarta |
| Top | solid Sitka spruce | Scale length | 25.4" / 645 mm |
| Back and sides | mahogany | Nut width | 44.5 mm / 1.75" |
| Finish | natural satin | Tuners | oil-bath |
| Nuts | bone (headstock nut and saddle nut) | Tuner finish | chrome |
Questions frequently asked
Is the Sigma Guitars OMM-ST suitable for fingerstyle?
The Orchestra Model body shape and the 44.5 mm nut width facilitate finger placement for arpeggios and enriched chords. The solid Sitka spruce top delivers precise attack and good dynamics.
What tonal character does the mahogany bring to this guitar?
The mahogany back and sides enhance the midrange and provide a warm response. This construction highlights crisp rhythms and notes played with fingerpicking.
What is the scale length of the OMM-ST?
The scale length is 25.4 inches, or 645 mm.
Is this acoustic guitar suitable for light strumming?
Its Orchestra Model shape is designed to maintain clarity without excessive bass. The balanced response is suitable for light strumming, vocal accompaniment, and folk, pop, or blues styles. The solid Sitka spruce top offers a dynamic reserve depending on playing intensity.
What materials are used for the neck and nuts?
The neck is made of mahogany and the fingerboard is micarta. The nut and saddle are made of bone to promote the transmission of string vibrations to the body.
