Sigma OMM-ST Acoustic Guitar

Regular Price: RRP $445

Special Price $359

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Sigma OMM-ST Acoustic Guitar

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RRP is suggested only by the supplier and we may not have sold in the past, now or in the future at the RRP See terms & conditions.

Simplicity is what the OMM-ST is all about. Stripping away any unnecessary detail you're getting a guitar that really knows what's important in an acoustic instrument, the tone and feel! The Solid Spruce top really pops when contrasted to its Mahogany back and sides, while its lack of binding give a minimal style that players who appreciate a less-cluttered look will love. The matt finish makes the OMM-ST a natural looker and doesn't need any frills to help it look great!

Key Features:

  • Matt Finish
  • Solid Sitka Spruce top
  • Mahogany back and sides
  • Superb build quality
  • Bone nut and saddle
  • No binding, simple look
  • 13/4" Nut



  • Body shape: 000
  • Top: Solid Spruce
  • Back and sides: Mahogany
  • Neck: Mahogany
  • Fingerboard: Rosewood
  • Inlays: Dots
  • Scale length: 645 mm
  • Nut: Bone
  • Width at nut: 44.5 mm
  • Bridge: rosewood
  • Pickguard: black
  • Hardware: Chrome
  • Colour: Natural, Matt finish
  • Tuning Machines: Chrome, Grover Diecast

The legend is alive – Sigma Guitars are back !

In the late 1960s the situation for US guitar manufacturers became difficult: guitars that were made in Japan, looking very similar to US guitars, were flooding the market but at a much lower price. These guitars increasingly endangered the US manufacturers dominance on the market, and a few American companies reacted to that development in an appropriate manner: They did not take any legal steps but instead launched a counter offensive. That’s when “Sigma Guitars” was born.
In 1970 “SIGMA”, the brandname for acoustic guitars, was launched.
They were designed by the best American guitar makers and built by specially trained staff in the most efficient guitar factories in Japan and then sent to the US for inspection before being released for sale and shipping to the music stores.

The first Japanese made Sigma guitars were quite different to the instruments built in the following years in other countries. After several years of production the manufacturing of the guitars was moved to Korea, with new model numbers in place, and the development of a new logo.
From now on every single guitar featured on the headstock the following words with pride: “ Sigma Guitars Est. 1970”. Now it was plain for everyone to see that “Sigma Guitars” belonged to one of the most established and respected companies in the fast-moving music instruments market.

“Sigma Guitars” were soon to have an excellent, yes even legendary, reputation. Some models were said to be of outstanding quality, both, in construction and sound. That’s why it is striking, but not surprising, that there are hardly any second-hand Sigma guitars up for sale. Most owners still swear by their instruments and would never part with them. There are Sigma fans, Sigma communities, Sigma websites; and even collectors have specialised in Sigma guitars.
We at AMI feel committed and obliged to this tradition. As a distributor of
fine acoustic and classical guitars for over 25 years, it is a great honour that we were able to obtain for some parts of the world the rights of the time-honoured name “Sigma Guitars Est. 1970” as well as the distinct Sigma logo.
Our business partner and guitar manufacturer is one of the most respected makers who has been building outstanding quality guitars for over 20 years.
This is where the circle closes:
“Sigma Guitars Est. 1970”, has returned, and we, at AMI are proud to be part of this legend.


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