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Sigma SOMR-28 Acoustic Guitar

Introducing the Sigma SOMR-28, a tribute to tradition and excellence in acoustic guitar craftsmanship. Rooted in the legacy of Sigma Guitars Est. 1970, this instrument embodies a rich heritage of quality and sound that has captivated musicians for decades.

Crafted to the iconic 000-14 fret body size, the SOMR-28 offers a comfortable and familiar playing experience cherished by guitarists worldwide. Drawing inspiration from the renowned Martin guitars, this model features a solid Sitka spruce top paired with solid Indian rosewood back and sides, delivering a balanced and resonant tone with remarkable clarity and depth.

The mahogany neck with a low-profile design ensures smooth playability and effortless fretting, while the bone nut and saddle enhance sustain and tonal richness. Adorned with an ebony fingerboard and bridge, this guitar offers a luxurious feel and exceptional response across the entire fretboard.

Equipped with high-quality Grover nickel open-gear tuners with butterbean knobs, the SOMR-28 ensures precise tuning stability and reliable performance. Finished in a polished gloss with aging toner, this instrument exudes timeless elegance and sophistication.

Complete with a heavy-padded softshell case (SSC-OM included) and D'Addario EXP16 strings, the Sigma SOMR-28 is ready to inspire musicians of all levels with its superb sound, comfort, and craftsmanship. Whether you're performing on stage or practicing at home, this guitar is sure to exceed your expectations and become a cherished companion on your musical journey.

  • Body Size: 000-14 Fret
  • Construction: Dovetail Neck Joint
  • Top: Solid Sitka Spruce
  • Back & Sides: Solid Indian Rosewood
  • Neck: Mahogany, Low Profile
  • Nut & Saddle: Bone
  • Fingerboard & Bridge: Ebony
  • Scale Length: 25.4” (645 mm)
  • Neck width at nut: 1-3/4” (44,5 mm)
  • Truss Rod: Two way Truss Rod
  • Tuning Machines: Grover Nickel Open-Gear w/ Butterbean Knobs
  • Finish: Polished Gloss w/ Aging Toner
  • Softshell Case: SSC-OM included
  • 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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