AUSTRALIA'S #1 ACOUSTIC GUITAR SPECIALIST

Sale

SDM-18

Sigma SDM-18 Acoustic Guitar

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

Includes Gig Bag

an AA-grade Sitka spruce top and solid AA-grade mahogany back and sides — for full, balanced projection and impressive clarity across the frequency range. This guitar is a go-to choice for singer-songwriters, session players, and traditionalists who demand responsive tone and handcrafted detail.

A low-profile mahogany neck and ebony fingerboard provide effortless playability, while a bone nut and saddle ensure excellent sustain and resonance. Grover nickel open-gear tuners with butterbean knobs add vintage flair and reliable tuning precision. With its sleek high-gloss finish and bold dreadnought sound, the SDM-18 offers outstanding craftsmanship and performance at every turn.

Features

  • All-solid construction with AA-grade Sitka spruce top and mahogany back and sides

  • Dreadnought body delivers strong bass, volume, and dynamic response

  • Low-profile mahogany neck and ebony fingerboard ensure smooth, comfortable play

  • Bone nut and saddle provide superior tone transfer and sustain

  • Grover nickel open-gear tuners offer reliable performance with classic styling

  • Body Size D-14 Fret

  • Construction Dovetail Neck Joint

  • Top Solid Sitka Spruce (AA Grade)

  • Back & Sides Solid Mahogany (AA Grade)

  • 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

  • Tuning Machines Grover Nickel Open-Gear with Butterbean Knobs

  • Finish High Gloss

  • Strings D’Addario EXP16

  • Case Softshell Case (SSC-D) Included

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).

Used instruments fall outside of our usual shipping policy, and shipping to most addresses will be $69 - $99, as shown at checkout.

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 info@acousticcentre.com.au 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!