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?

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.

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.

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

Are these correct for my martin 12 string dm-12 acoustic guitar?

i do not have a 12 string,but martin strings is all i use

what is what is the difference in "silk & phosphor" and "phosphor bronze" strings? Which One has warmer and deeper lows?

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

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Martin MA130FX Strings SP Flexible Core - Silk & Phosphor Custom (11-47)

Product ID: 284250837

Details

Brand
Martin
Colour
Custom
Instrument
Acoustic
String gauge
Custom
String material type
Phosphor

⚡Flexible core for easy bends

🎸Custom gauge 0.011-0.047

🔆Bright, balanced phosphor bronze tone

452 Kč

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Description

🎶 Unlock your guitar’s true voice with Martin’s flexible core brilliance!

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.

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.

Specifications

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 739 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.
Manufacturer Part Number	MA130FX-U
Material Type	Phosphor Bronze
Model Name	MA130FX
Model Number	MA130FX
Number of Items	1
Number of Packs	1
Recommended Uses For Product	Fingerstyle blues, Americana, country, bluegrass, ragtime
Set Name	MA130FX
Sound Profile	Bright, brilliant sound
String Gauge	Custom
String Material Type	Phosphor Bronze
String gauge	Custom
String material type	Phosphor Bronze
UPC	729789580533
Unit Count	6 Count

Reviews

J**R

leveren wat besteld is

snaren waren top alleen heb ik de dadario snaren nog steeds niet ontvangen beetje slecht vr groet Jan

28.10.2026

D**I

Martin excellence.

Overnight delivery! Strings sound awesome. Easy to fret. Highly recommend.

26.12.2025

F**O

Bel suono e bella estetica, ottima suonabilità

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.

17.09.2022

S**A

great strings for bending and against finger fatigue

nice tone, soft, pleasant to play

25.02.2021

S**H

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!!

2.05.2021

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452 Kč

Duties & taxes included

In stock

Sold byAmazon Czech RepublicDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Czech Republic.

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