--- product_id: 178813667 title: "Authentic Acoustic Flexible Core" brand: "martin" price: "€ 22.91" currency: EUR in_stock: null reviews_count: 13 category: "Martin" url: https://www.desertcart.pt/products/178813667-authentic-acoustic-flexible-core store_origin: PT region: Portugal --- # Flexible core reduces finger fatigue Custom 11-47 gauge for balanced tone Bright, rich phosphor bronze sound Authentic Acoustic Flexible Core **Brand:** martin **Price:** € 22.91 **Availability:** ❌ Out of Stock ## Summary > 🎶 Unlock your guitar’s true voice with effortless style and vibrant tone! ## Quick Answers - **What is this?** Authentic Acoustic Flexible Core by martin - **How much does it cost?** € 22.91 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/178813667-authentic-acoustic-flexible-core) ## Best For - martin enthusiasts ## Why This Product - Trusted martin brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pro-Grade Durability:** Phosphor bronze with silk wrap ensures long-lasting brightness and smooth feel, set after set. - • **Trusted Craftsmanship:** Made by CF Martin & Co., the gold standard for authentic acoustic guitar strings worldwide. - • **Effortless Playability:** Flexible core design lets you bend notes with ease—no more finger fatigue during long sessions. - • **Versatile Genre Mastery:** Perfect for fingerpicking or strumming across blues, folk, country, and rock—your all-in-one tone solution. - • **Balanced Sonic Brilliance:** Custom gauge strings (11-47) deliver a full spectrum of bright highs, warm mids, and rich lows. ## Overview Martin MA130FX Strings feature a custom 11-47 gauge phosphor bronze and silk wrap with a flexible core, designed to reduce finger fatigue while delivering bright, balanced acoustic tones. Ideal for fingerstyle and pick playing across multiple genres, these professional-grade strings combine durability and playability, crafted by the renowned CF Martin & Co. ## Description Buy Martin MA130FX Strings SP Flexible Core - Silk & Phosphor Custom ( 11-47 ). Free delivery and returns on eligible orders. Review: Great for Classical or Electric guitar players who own an acoustic. - These strings are AMAZING!! I stopped playing my acoustic guitar and was only playing electric. When I tried to go back to play the acoustic I had last my strength for barre chords and the guitar felt difficult to play, as though it was a fight. I even took it to a luthier. Had it set up and new strings but I hated it and wanted to sell it. I saw a review online about these strings and I thought that I would try it out. I've put them on today and I am really amazed and have been playing my acoustic all afternoon and no fatigue. Fretting feels easy and the sound is very sweet and dynamic. The feel is great and I am so happy!! Review: Sounding good! - Martin strings are always great quality. I have recently changed from 13 gauge to 11 gauge and this has meant I am able to play every day without damaging my fingers. 11 gauge are kinder on your 'chord' fingers and your 'picking' nails. Although 11's don't boom quite as much as the 13's the sound is still great. Thanks. ## Features - BRIGHT TONES: Martin Authentic Acoustic Strings provide excellent tuning stability and playability with bright and rich tones. Discover your guitar's true voice with this professional-grade guitar string pack. - FLEXIBLE CORE STRINGS: Created to reduce finger fatigue and allow huge bends, these strings feature a lighter-gauge version of our Superior Performance core wire combined with heavier wrap wire to deliver a full and balanced tone with increased flex. - STRING SOUNDS: Designed to bring out a full and balanced tone from your guitar, these phosphor bronze acoustic guitar strings can be used for fingerpicking, pick playing, and other methods. Play with these strings for any genre—rock, bluegrass, country, folk, blues, and more. - CUSTOM-GAUGE ACOUSTIC GUITAR STRINGS: Measuring from a 0.011" high E string to a 0.047" low E string, these are high-quality acoustic guitar strings that brighten the natural tuning of your guitar, including tenor, mid-tones, and bass. They feature a tension of 128. - AUTHENTIC ACOUSTIC FLEX CORE: With Martin Authentic Acoustic, you get a total set of strings designed for performance and playability. Martin guitars and accessories remain the choice for musicians around the world for their unrivaled quality, craftsmanship, and tone. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07Y2KKGZS | | Best Sellers Rank | 1,113 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 77 in Guitar Strings | | Body Material Type | Phosphor Bronze & Silk | | Brand Name | MARTIN | | Coating Description | Standard coating | | Colour | SP Flex Core Silk & Phos Custom 11-47 | | Country of Origin | Mexico | | Customer Reviews | 4.6 4.6 out of 5 stars (694) | | Finish Type | Bronze Plated | | Global Trade Identification Number | 00729789580533 | | Included Components | 6 x Acoustic Guitar Strings (11-47) | | Instrument | Acoustic Guitar | | Item Type Name | Martin MA130FX Strings SP Flexible Core - Silk & Phosphor Custom ( 11-47 ) | | Item Weight | 32 Grams | | Manufacturer | CF Martin & Co. | | Manufacturer Part Number | MA130FX-U | | Material Type | Phosphor Bronze | | Model Name | MA130FX | | Model Number | MA130FX | | Product Warranty | 1. | | Recommended Uses For Product | Fingerstyle blues, Americana, country, bluegrass, ragtime | | Set Name | MA130FX | | String Gauge | Custom | | String Material Type | Phosphor Bronze | | UPC | 729789580533 | ## Product Details - **Brand:** MARTIN - **Colour:** SP Flex Core Silk & Phos Custom 11-47 - **Instrument:** Acoustic Guitar - **String gauge:** Custom - **String material type:** Phosphor Bronze ## Images ![Authentic Acoustic Flexible Core - Image 1](https://m.media-amazon.com/images/I/61ftKKN6jVL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Is there a full set of 6 strings in each pack and long enough for full size guitar?** A: See the product information, this will answer your query: http://www.amazon.co.uk/Martin-M170-Acoustic-Guitar-Strings/dp/B0002CZST4/ref=cm_cd_al_qh_dp_t **Q: are they nylons or steels?** A: Hi there. They are steel core with a bronze wound cover on 3rd (g) to 6th string, I think, if they follow same pattern as the light ones I buy (red packet), or just possibly 4th (d) to 6th string. A wound 3rd is preferable for fine tuning but not so good for bending. Martin strings are an excellent product, especially at the price quoted. PWN **Q: What's the difference between cutom light, extra light, light and medium? I'm not sure which one to choose...** A: Strings are also measured in gauges so 10 11 12or 13 so extra light is 10 custom light is 11 light is 12 and medium is 13 ... But if your a beginner or not playin long I would suggest 11 or custom light .. Should be easier on the fingers regards Cadno **Q: i use middle strings they hurt my fingers and i muting the strings , how would i improve it , getting extra light strings?** A: Hi I have used normal strings and yes they do hurt, now I use light strings or extra light strings and I love them, they are easer on the finger and they sound good to, the ones I like are Elixir Acoustic light 012-053 nanoweb ultra thin coating with anti-rust plane steels. not cheap but good and they last along time, hope this helps. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for Classical or Electric guitar players who own an acoustic. *by S***H on 2 May 2021* These strings are AMAZING!! I stopped playing my acoustic guitar and was only playing electric. When I tried to go back to play the acoustic I had last my strength for barre chords and the guitar felt difficult to play, as though it was a fight. I even took it to a luthier. Had it set up and new strings but I hated it and wanted to sell it. I saw a review online about these strings and I thought that I would try it out. I've put them on today and I am really amazed and have been playing my acoustic all afternoon and no fatigue. Fretting feels easy and the sound is very sweet and dynamic. The feel is great and I am so happy!! ### ⭐⭐⭐⭐⭐ Sounding good! *by B***5 on 13 May 2023* Martin strings are always great quality. I have recently changed from 13 gauge to 11 gauge and this has meant I am able to play every day without damaging my fingers. 11 gauge are kinder on your 'chord' fingers and your 'picking' nails. Although 11's don't boom quite as much as the 13's the sound is still great. Thanks. ### ⭐⭐⭐⭐⭐ Great guitar strings *by I***N on 20 June 2020* I recently bought the Martin authentic (MA540) strings and felt they didn't sound right, too tinny for my likening so i read a few reviews regarding these (MA130FX’s) and a quick google revealed Tommy Emmanuel uses them, i’m a big fan of his, he uses the 12’s these are 11’s but the sound these strings produce are rich, warm, loud and so much better than the ones i had originally, i’d definitely recommend these for your Martin or whatever acoustic you own they’ll make your guitar sound so much better. ## Frequently Bought Together - Martin Authentic Acoustic Guitar Strings, Flexible-Core MA130FX 92/8 Phosphor Bronze, (Packaging May Vary) - Martin Authentic Acoustic Guitar Strings - Marquis Silked - Martin Authentic Acoustic Guitar Strings, Superior Performance Custom 11.5-47, Silk & HT Steel --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/178813667-authentic-acoustic-flexible-core](https://www.desertcart.pt/products/178813667-authentic-acoustic-flexible-core) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-01*