Sigma SG Series JM-SG45 Acoustic, Sunburst

Sigma SG Series JM-SG45 Acoustic, Sunburst



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Sigma SG Series JM-SG45 Acoustic, Sunburst

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With the Sigma SG Series JM-SG45, seen here with a stylish Sunburst finish, you get a premium-grade Dreadnought-style electro acoustic guitar with plenty of vintage character.

Featuring a solid Sitka Spruce top, layered Mahogany back and sides, a slick-playing neck and fingerboard, and a Fishman electronics system, this guitar is ideal for players looking to purchase a reliable gigging workhorse.

Sigma SG Series JM-SG45 All Solid Electro Acoustic Key Features

  • Classic Guitar Shape - The Slope Shoulder Dreadnought has been a favourite with countless players the world over for many decades. This guitar design offers a large soundbox, resulting in a more dynamic and well-projected voice than with smaller models, making it perfect for live performances.
  • Exquisite Tonewoods - To deliver a vibrant and dynamic voice, SIGMA have created this guitar with a Solid Sitka Spruce top piece, with Layered Mahogany back and sides. The end result of this tonewood pairing is a guitar that offers impressive levels of projection, with a naturally rich and vibrant voice.
  • Reliable Hardware - A Micarta fingerboard and bridge combine perfectly with the Open-Gear tuners to deliver a truly sublime playing experience.
  • Fishman Electronics - This guitar is equipped with a Fishman Sonitone electronics system, with built-in tuner and EQ controls. This system is ideal for projecting your performances via amplifier or PA system, as well as plugging into an audio interface for home recording sessions.
  • Softshell Case Included - To keep this guitar safe from scratches, knocks, and spills, Sigma have included a padded softshell case. This case features shoulder straps for easy transportation, and an accessory pouch for you to keep sheet music, cables, straps, strings, etc.

Sigma SG Series JM-SG45 All Solid Electro Acoustic Specs

  • Body Size: D-14 Fret, Slope Shoulder
  • Construction: Dovetail Neck Joint
  • Top: Solid Sitka Spruce
  • Back & Sides: Mahogany
  • Neck: Mahogany, Low Profile
  • Nut & Saddle: Bone
  • Fingerboard & Bridge: Micarta
  • Scale Length: 24.75” (628 mm)
  • Neck width at nut: 1-3/4” (44,5 mm)
  • Truss Rod: Two way Truss Rod
  • Tuning Machines: Grover Nickel Open-Gear
  • Knobs: Ivoroid knobs
  • Electronics: Fishman Sonitone
  • Softshell Case: SSC-D included
  • Finish: Polished Gloss w/ Sunburst
  • Strings: D´Addario EXP16
More Information
Manufacturer Sigma
SKU 168939
Shipping Weight (kg) 8.000000
Case Included gig bag
Colour sunburst
Warranty 2 Years
Series SG Series
Scale Length 24.75"
Nut Width 1.75"
Neck Wood Mahogany Neck
Pickup Config Acoustic Pickup System
Number Of Strings 6 string
Right / Left-Handed right handed
Fingerboard Micarta Fingerboard
Guitar Style dreadnought
Body Size full size
Body Material mahogany body


We have a wide range of Delivery Options available, depending on the value of your parcel and budget. Select from our 2-3 Day Saver Service or our Next Working Day options at the Checkout.
This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you, and the drivers name - just so you know when to turn the volume down!

  • Free Delivery Available on Selected Products
  • Weekend UK Mainland Delivery (Saturday-Sunday): £19.99
  • Small Items (Under 750g) Small items will be delivered by Royal Mail starting from 99p
  • Heavy Items (Over 30kg): Pallet Service Doorstep Delivery £65

For heavy items, courier details, out of stock products, out of area postcodes or international deliveries see our full Delivery info here.


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If you and your item aren’t getting along, you have 14 days from when you receive the goods to contact our PMT experts either by phone or email to return your item.

*Please note: We cannot accept returns of microphones, any in-ear earphones, monitors, orchestral instruments with mouthpieces and any other items that touch your mouth, nose or inner ear if you have removed the hygienic packaging.

Click here for more information on Returns at PMT.

Online Orders

If you and your new item aren’t getting along, you have 14 days from when you receive the goods to contact our PMT Experts either by phone or email to return your item or organise an exchange for something more suitable.

Store Orders

If you've changed your mind about something you bought in-store, bring it back within 14 days of purchase and we'll be happy to exchange it for another product, a gift card or store credit.