Sigma OMM-ST Small Body Acoustic Guitar

Ships from our warehouse. No store pickup available for this item.

Free shipping Australia-wide on all Sigma Guitars! Instore stock and website stock may vary: please call on 03 9699 5691 for accurate stock level.

Experience the exceptional sound and craftsmanship of the Sigma OMM-ST Small Body Acoustic Electric Guitar, available exclusively at Acoustic Centre. As one of Melbourne's premier music stores, we pride ourselves on offering the best instruments at unbeatable prices. This Sigma guitar is no exception, delivering outstanding value for both beginners and seasoned players.

The Sigma OMM-ST features a compact 000-14 Fret body size, making it comfortable to hold and play for hours on end. Crafted with a solid Sitka Spruce top and Mahogany back and sides, this guitar produces a rich, balanced tone with excellent projection. The smooth Mahogany neck and Micarta fingerboard offer a classic feel and effortless playability, while the bone nut and saddle ensure optimal sustain and resonance.

Whether you're strumming chords or fingerpicking intricate melodies, the Sigma OMM-ST delivers remarkable sound quality and versatility. With its chrome diecast tuning machines and D'Addario EXP16 strings, this guitar stays in tune and provides a smooth playing experience. Discover the magic of the Sigma OMM-ST Small Body Acoustic Electric Guitar at Acoustic Centre, where quality and affordability meet in perfect harmony.

Visit our online store or come to our physical shop in Melbourne to explore the Sigma OMM-ST and our wide selection of acoustic guitars. Our knowledgeable staff is ready to assist you in finding the perfect instrument that matches your musical aspirations. Elevate your playing with the Sigma OMM-ST from Acoustic Centre and embark on a musical journey like never before.


  • Body Size: 000-14 Fret
  • Top: Solid Sitka Spruce
  • Back & Sides: Mahogany
  • Neck: Mahogany
  • Nut: Bone
  • Saddle: Bone/Compensated
  • Fingerboard: Micarta
  • Scale Length: 25.4” (645 mm)
  • Neck width at nut: 1-3/4” (44,5 mm)
  • Tuning Machines: Chrome, diecast
  • Strings: D´Addario EXP16

Acoustic Centre offers free shipping on all new items to most locations within Australia on all orders over $99, excluding Western Australia, Northern Territory and Far North Queensland. Used items have a flat rate shipping fee of $59 within our usual shipping locations. We also offer competitive Express shipping options at checkout.

Customers located in Western Australia, Northern Territory and Far North Queensland recieve free shipping on all accessory orders over $99, but will incur a flat rate instrument or large item shipping charge of $179 (or $299 for Express shipping).

Occasionally due to issues with delivering to remote or unusual destinations, we aren't able to offer free postage. We reserve the right to retract the offer if freight costs exceed 15% of your purchase. We will always notify you if there is an issue and offer a full refund or arrange alternative delivery options.

All strings and accessories will be shipped with tracking via courier or Australia Post. Other items including guitars and amplification equipment will be shipped using our courier service providers, with a tracking number and signature on delivery.

The Acoustic Centre ships goods Australia-wide, however at this time we are unable to accept international orders.

Zip Money - Buy Now, Pay Later.

We offer 3 Months interest free on purchases under $1000, and 6 Months interest free on purchases over $1000.

Click here for more information and Application form - it only takes a minute!

Studio 19 RentalsWe rent the things people love.

Studio19 Rentals operates Australia’s foremost in-store Rental program for musical instrument retailers, and allows you to have the gear of your dreams now for a low monthly price. 

Studio19 offers:

  •  Low monthly payments
  •  Apply to buy at any time
  •  Protection plan available
  •  Return anytime after the minimum rental period
  •  No ongoing account keeping fees or charges

Click here  for more details.

We endeavour to show the actual instrument in stock whenever possible, but the guitar in stock may differ slightly from the one shown on our website. Materials used can look different from guitar to guitar, including timber grain and colour, parts colours and finishing. If an instrument is a one-of-a-kind or preowned guitar, the picture will always be of the actual guitar in stock, but production models may have slight variations to the picture shown.

If you're after a particular look, feel free to email us at or send us a message through our chat service to request photos of the actual guitar in stock. We are more than happy to send through pictures of all in-stock guitars, to make your choice easier.

Please note that returns will not be accepted for variations in timber grain /  colouring, finish variations and parts colouring, unless there is a fault with the instrument. If you have any questions at all regarding an instrument's appearance, just drop us a line - we're always happy to send photos, and if we have more than one instrument in stock you'll be able to choose the exact guitar that you receive!

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