Sigma Guitars
Discover the exceptional value, rich resonance, and comfortable playability of sigma guitars. Originally launched in 1970 by C.F. Martin &; Co. to compete with incoming imports, the Sigma brand has spent over fifty years perfecting the art of high-value acoustic guitar design. Renowned for their authentic, vintage-inspired Martin-style aesthetics and voices, sigma acoustic guitars deliver professional-grade performance and tone at a highly accessible price point. As a premier authorized dealer for sigma guitars uk, MusicStreet is proud to offer these highly dependable instruments.
Because every player deserves a perfectly playing instrument, every single sigma guitar we sell undergoes a rigorous, multi-point inspection and a professional workshop setup (worth £75) by our expert techs in our Huntingdon showroom before shipping, ensuring flawless playability straight out of the box.
✓ Authentic Martin-Style Heritage ✓ Free Fully Insured UK Delivery over £99 ✓ Professional Setup Included
Explore Sigma Guitars at MusicStreet
The MusicStreet Setup Advantage: Why Your Sigma Deserves It
Sigma acoustic guitars are celebrated for their exceptional build consistency, solid wood tops, and comfortable neck profiles. However, because these guitars are crafted from real, highly resonant solid tonewoods, they are sensitive to temperature and relative humidity changes during transit. A factory setup, while excellent, is rarely optimized for your specific playing style or the UK climate.
At MusicStreet, we treat every Sigma with the reverence it deserves. We perform a **free £75 professional workshop setup** on every single Sigma acoustic guitar we sell. Our expert luthiers adjust the truss rod, file the nut slots, precision-shave the bridge saddle, and polish the frets to ensure your new instrument plays with a comfortable, buzz-free low action straight out of the box.
🔧 Free £75 Professional Setup
Every Sigma acoustic guitar is individually set up in our in-house workshop. We adjust the action, intonation, and neck relief to match your playing style, ensuring it plays perfectly straight out of the box.
🛡️ 12-Month Warranty
We stand behind every instrument we sell. All of our Sigma acoustic guitars come with a full 12-month warranty, giving you complete peace of mind with your purchase.
🚚 Free UK Delivery & 14-Day Returns
Get free, fully insured UK shipping on all orders over £99. If the guitar isn't the perfect fit for your hands, return it to us within 14 days for a hassle-free refund or exchange.
Explore Legendary Sigma Acoustic Guitar Series
Sigma offers a diverse range of acoustic guitars that redefine classic American designs with modern precision. From powerful dreadnoughts to intimate orchestra models, explore their core lineups:
Sigma Standard & 15 Series
The ultimate workhorses. The **Sigma Standard Series** features solid Sitka spruce tops paired with mahogany or rosewood back and sides, delivering classic acoustic projection and balanced mid-range. The **15 Series** (such as the DM-15 and 000M-15) features all-mahogany construction, producing a warm, woody, and focused acoustic voice that is highly favored by blues players and singer-songwriters.
Sigma Vintage & Custom Series
Historic styling meets modern reliability. Sigma's **Vintage Series** pays direct homage to the golden era of acoustic design, featuring vintage-tinted tops, open-gear tuners, and traditional neck profiles. The **Custom Series** offers premium tonewood upgrades, including solid Adirondack spruce tops and gorgeous visual appointments for players seeking custom-shop luxury.
Electro-Acoustics & Pre-Owned
Stage-ready performance with premium onboard electronics. Most Sigma electro-acoustic models feature high-quality Fishman preamps and pickups, delivering natural, feedback-resistant plugged-in tone. We also stock a constantly rotating selection of certified pre-owned Sigma instruments. Explore our used range in our Pre-Owned Collection.
Guitar Trade-In & Part-Exchange Program
Ready to upgrade your current rig? We make it incredibly easy to trade in your pre-owned gear. Through our straightforward guitar part-exchange program, you can bring your old guitar, amplifier, or effects pedals into our showroom (or send us details online) and put its value directly toward any new or used Sigma guitar in our store.
Visit Our Huntingdon Guitar Showroom
If you are searching for premium guitar shops in Cambridgeshire, come visit our showroom in Huntingdon. Located at 10 Chequers Court, our showroom features a dedicated acoustic room where you can sit back, play, and compare different body shapes and tonewoods side-by-side. We are easily accessible from Cambridge, Peterborough, and Bedford, with convenient parking nearby.
Frequently Asked Questions About Sigma Guitars
Are Sigma guitars made by Martin? +
Sigma was originally launched by C.F. Martin & Co. in 1970 to compete with high-quality Japanese imports. While Sigma is now an independent company, they continue to build vintage-inspired instruments that utilize classic Martin-style body shapes, bracing patterns, and aesthetic designs, offering legendary American acoustic heritage at an incredibly accessible price point.
What is included in your £75 professional setup? +
Our expert in-house technicians perform a complete multi-point inspection. This includes adjusting the neck relief (truss rod), setting the optimal string action (height) at both the nut and bridge saddles, setting the intonation, cleaning and conditioning the fretboard, polishing the frets, checking all electronics/pots, and installing a fresh set of premium strings.
Do Sigma acoustic guitars have solid wood tops? +
Yes, almost all Sigma acoustic guitars feature solid wood tops (typically solid Sitka Spruce, Western Red Cedar, or Mahogany). Solid tops are highly superior to laminated tops because they vibrate more freely, delivering significantly better projection, dynamic range, and a tone that matures and improves the more the guitar is played.
Can I trade in my old gear toward a purchase? +
Absolutely. We offer a highly competitive part-exchange program. You can bring your gear directly to our Huntingdon showroom for an on-the-spot valuation, or contact us online with photos and details to receive a preliminary trade-in estimate.
The Sigma Legacy: Martin's Blueprint for Value
The story of guitar sigma began in 1970, when C.F. Martin & Co. created the brand to offer high-quality, reliable acoustic guitars built to Martin's exacting specifications at a fraction of the cost. This rich heritage of acoustic innovation is preserved in every acoustic guitar sigma built today.
By combining traditional acoustic construction methods—such as hand-scalloped bracing and solid wood tops—with modern manufacturing precision, Sigma offers the iconic designs, rich harmonic complexity, and robust projection of legendary American acoustics at a highly accessible price point.
Explore Sigma's Premium Acoustic Series
1. The Standard Series (The Classic Workhorses)
The heart of the Sigma lineup. The Standard Series features classic dreadnought, auditorium, and parlor body shapes built with solid Sitka spruce tops paired with mahogany or rosewood back and sides. These instruments deliver the warm, robust, and highly focused bass response with a sweet treble chime that defined modern acoustic music history.
2. The 15 Series (Warm Mahogany Resonance)
For the player who values organic, natural beauty and pure, warm acoustic tone. The 15 Series features solid mahogany tops paired with mahogany back and sides, finished with a beautiful, thin satin finish that allows the wood to vibrate freely. These instruments offer exceptional note definition, warm midrange punch, and a highly responsive touch.
3. The Travel Series (Compact Companions)
The ultimate travel companion. Sigma's travel guitars (such as the TM-12 or TM-15) feature a compact, 3/4-sized body with a solid wood top and highly durable back and sides. They deliver a surprisingly robust, full-bodied projection despite their compact size, making them the perfect grab-and-go instruments for beach trips, open mic nights, and songwriting sessions.
4. The MusicStreet Difference: Workshop-Prepared Playability
At MusicStreet, we don't believe in "box shifting." Beginners and students need a perfectly set up guitar even more than professionals, as a poorly set up instrument with high action can make learning frustrating and painful.
Every single acoustic sigma guitars model that leaves our Huntingdon showroom undergoes a rigorous, multi-point inspection and a professional workshop setup (worth £75) by our expert guitar techs. We adjust the action, relief, intonation, and fretwork to ensure your new Sigma plays flawlessly straight out of the box.
- No Drop-Shipping: Every guitar listed on our site is physically in stock at our Huntingdon store.
- 1-Year Warranty: We back every instrument we sell with a comprehensive 1-year warranty.
- Free UK Shipping: Enjoy free, fully insured UK shipping on all orders over £99, with competitive rates worldwide.
- Flexible Financing: Buy with confidence using Klarna or PayPal split payments.
5. Frequently Asked Questions (FAQs)
Are Sigma acoustic guitars made by Martin?
While Sigma was originally launched and owned by C.F. Martin & Co. in 1970, the brand is now independently owned. However, Sigma continues to build their guitars to the same classic Martin-style blueprints, utilizing traditional bracing patterns and body shapes to deliver authentic, vintage-inspired acoustic tones at an incredible price point.
What is the difference between a solid top and an all-solid guitar?
A solid top guitar features a solid piece of wood for the soundboard (the top of the guitar), which is the most critical component for tone and projection, paired with layered (laminated) back and sides for added durability. An all-solid guitar features solid wood for the top, back, and sides, offering maximum resonance, dynamic range, and a tone that matures and sounds even better with age.
Does my Sigma acoustic guitar come set up?
Yes. Every Sigma guitar purchased from MusicStreet receives a professional, custom setup in our in-house workshop before dispatch. If you have specific preferences for string gauge or tuning, simply let us know when placing your order, and our techs will configure it to your exact specifications.
Can I try these guitars in person?
Absolutely. We welcome you to visit our independent showroom at 10 Chequers Court, Huntingdon, Cambridgeshire. You can get hands-on with our collection, test them through premium amplifiers, and get honest, expert advice from our team of working musicians.
