--- product_id: 284250837 title: "Martin MA130FX Strings SP Flexible Core - Silk & Phosphor Custom (11-47)" brand: "martin" price: "£14.04" currency: GBP in_stock: true reviews_count: 5 category: "Martin" url: https://www.desertcart.co.uk/products/284250837-martin-ma130fx-strings-sp-flexible-core-silk-and-phosphor-custom store_origin: GB region: United Kingdom --- # Flexible core for easy bends Custom gauge 0.011-0.047 Bright, balanced phosphor bronze tone Martin MA130FX Strings SP Flexible Core - Silk & Phosphor Custom (11-47) **Brand:** martin **Price:** £14.04 **Availability:** ✅ In Stock ## Summary > 🎶 Unlock your guitar’s true voice with Martin’s flexible core brilliance! ## Quick Answers - **What is this?** Martin MA130FX Strings SP Flexible Core - Silk & Phosphor Custom (11-47) by martin - **How much does it cost?** £14.04 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/284250837-martin-ma130fx-strings-sp-flexible-core-silk-and-phosphor-custom) ## 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 - • **Tour-Ready Durability:** Professional-grade strings built to withstand rigorous practice, studio work, and live performances. - • **Effortless Playability:** Flexible core reduces finger fatigue and enables huge bends for expressive playing. - • **Precision Tuning Stability:** Custom gauge strings maintain perfect pitch through long sessions and tours. - • **Rich, Bright Acoustic Voice:** Silk & phosphor bronze blend delivers a full, balanced tone that highlights every nuance. - • **Versatile Genre Compatibility:** Ideal for fingerstyle blues, Americana, country, bluegrass, and more—your all-genre secret weapon. ## Overview Martin MA130FX Strings feature a custom gauge 0.011-0.047 phosphor bronze and silk core design that offers bright, balanced tones with exceptional tuning stability. Engineered for professional acoustic guitarists, these flexible core strings reduce finger fatigue and enable expressive bends, making them perfect for diverse genres from blues to bluegrass. Trusted by musicians worldwide, they deliver durability and rich sound for both studio and stage. ## Description Martin Guitars Authentic Acoustic Flexible Core Strings provide unrivaled quality, craftsmanship, and tone for your acoustic guitar. Designed to produce true, consistent tone, these custom-gauge strings provide excellent tuning stability and playability so your guitar can stand up to rigorous practice and performance schedules. Made from silk and phosphor, these strings feature a lighter-gauge core wire combined with a heavier wrap wire for a full, balanced tone and excellent playability. This pack of professional-grade guitar strings will last through long jam sessions, late-night campfire songs, and plenty of picking. It's an ultra-reliable set of strings that you can take on tour or keep in the studio.Designed to bring out your guitar's true tone, these silk/phosphor guitar strings can be used for fingerstyle blues, Americana, country, bluegrass, ragtime, and many more styles. With this pack, you'll receive 6 custom-gauge guitar strings designed for optimal playing performance. The low E string measures 0.047", the A string measures 0.038", the D string measures 0.028", the G string measures 0.023", the B string measures 0.013", and the high E string measures 0.011". This total set of custom-gauge strings features a tension of 128, making it easy to get a rich, bright tone with an ultra-flexible feel. Add these professional guitar strings to your touring and performing equipment today!Martin Guitar has been producing high-quality, musician-choice guitars and guitar accessories since 1833. The Martin Authentic Acoustic Flexible Core Guitar Strings are the real deal—not an imitation. Discover your guitar's true voice with this professional-grade guitar string pack. Review: Martin excellence. - Overnight delivery! Strings sound awesome. Easy to fret. Highly recommend. Review: Great strings! - D'Addario strings are great! I have their XS Phosphor Bronze on my guitars but tried the Silk n Steel on the mahogany guitars and they are fantastic. Adding mellow tones to the sound. I saw these Silk and Phosphor and had to try them. I put them on a new 0 sized spruce and rosewood guitar. Easy on your fingers, do very well on bending and add just a little brightness to the mellow tone. I have already ordered more. ## 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 | | Body Material Type | Phosphor Bronze & Silk | | Brand | Martin | | Brand Name | Martin | | Coating Description | Standard coating | | Coating description | Standard coating | | Color | Custom | | Colour | Custom | | Customer Reviews | 4.6 out of 5 stars 659 Reviews | | 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. | | Material Type | Phosphor Bronze | | Model Name | MA130FX | | Model Number | MA130FX | | Recommended Uses For Product | Fingerstyle blues, Americana, country, bluegrass, ragtime | | String Gauge | Custom | | String Material Type | Phosphor Bronze | | String gauge | Custom | | String material type | Phosphor Bronze | | UPC | 729789580533 | ## Product Details - **Brand:** Martin - **Colour:** Custom - **Instrument:** Acoustic Guitar - **String gauge:** Custom - **String material type:** Phosphor Bronze ## Images ![Martin MA130FX Strings SP Flexible Core - Silk & Phosphor Custom (11-47) - Image 1](https://m.media-amazon.com/images/I/61ftKKN6jVL.jpg) ## Questions & Answers **Q: My problem is some stings are to stiff and hard to push down on the neck. The ones I have now are hard to push down are these soft or hard strings?** A: These are great strings, but they are medium gauge strings. For strings that are easier to push down I would recommend Light or Extra Light strings. **Q: Is the custom gauge set for the silk and phosphorus strings or silk and steel? The selection (custom) and picture are of 2 different products.** A: The Silk and Steel are a nickel plated string- softer to the touch. The silk and phosphorus sound more like a acoustic. The nickel you will loose some volume. More like a electric string **Q: Are these correct for my martin 12 string dm-12 acoustic guitar?** A: i do not have a 12 string,but martin strings is all i use **Q: what is what is the difference in "silk & phosphor" and "phosphor bronze" strings? Which One has warmer and deeper lows?** A: There is No difference except- the silk have been made a little softer to the touch. Like-slightly sanded off, they are warmer and deeper. They do not last quite as long but worth it to my ear. I’ve played for 25 years- To get a warmer sound you need a Nylon pick. I love the Dunlap 1.38mm Jazz pick. Then I take some 2000 grit sand paper ( you have to buy at auto parts store) and Buff both sides and edge of pointing end that hits the string. Trust me. Makes it Creamy warm. Sometimes works better than other times. But I love it! So all you hear is the Note instead of all the bright metallic overtones. Good luck ## Customer Reviews ### ⭐⭐⭐⭐⭐ Martin excellence. *by D***I on 26 December 2025* Overnight delivery! Strings sound awesome. Easy to fret. Highly recommend. ### ⭐⭐⭐⭐⭐ Great strings! *by K***. on 11 January 2026* D'Addario strings are great! I have their XS Phosphor Bronze on my guitars but tried the Silk n Steel on the mahogany guitars and they are fantastic. Adding mellow tones to the sound. I saw these Silk and Phosphor and had to try them. I put them on a new 0 sized spruce and rosewood guitar. Easy on your fingers, do very well on bending and add just a little brightness to the mellow tone. I have already ordered more. ### ⭐⭐⭐⭐⭐ Bel suono e bella estetica, ottima suonabilità *by F***O on 17 September 2022* Le ho prese inizialmente per la chitarra Eko di mia figlia, 13 anni, che già suona ma con corde bronzo regolari fa un po' fatica. Ora le ho prese anche per la mia Cort. Sono esteticamente molto belle e ben fatte. Il suono è pieno e ha profondità ed effettivamente sono molto più flessibili al bending. Creano meno tensione senza però perdere volume o tonalità. Non sono morbide come le silk and steel Le silk and steel hanno una morbidezza estrema e un touch confortevole ma che testituiscono anche un suono molto dolce (mellow) e sono di colore argento invece che ambrato. Non credo ci sia paragone con le silk and steel in tema di morbidezza, ma hanno certamente una buona suonabilità rispetto alle bronzo "normali". Se si viene da corde con maggiore tensione, sarà necessario regolare il truss rod per dare relief al manico. Operazione facile, basta inserire la chiave nell'innesto dentro la buca e fare 1/4 o 1/2 giro antiorario, ed eventualmente ripetere l'operazione il giorno dopo se non basta. Il manico è di legno e ha bisogno di alcune ore per assestarsi all trazione del truss rod. Quindi veritieri i dati dichiarati sulla tensione. Quindi, ottime per allentare la tensione sul manico e suonare più facilmente la chitarra, anche se rappresentano comunque una soluzione intermedia tra le bronzo e le silk and steel. ## 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.co.uk/products/284250837-martin-ma130fx-strings-sp-flexible-core-silk-and-phosphor-custom](https://www.desertcart.co.uk/products/284250837-martin-ma130fx-strings-sp-flexible-core-silk-and-phosphor-custom) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-14*