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Martin MSP4100 Phosphor Bronze Light Acoustic Guitar Strings (12-54)


(4 reviews)


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MSRP: $17.49 $5.95 Save : $11.54 (66%)
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MSRP: $17.49 $5.95 Save : $11.54 (66%)
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Martin SP® Studio/Performance Series strings are ideal live, in the studio, or wherever maximum string life is desired. The creation of these high performance strings is a result of research done in cooperation with specialty steel producers. Due to the development of an industry leading ultra-high quality steel core, Martin SP strings resist breakage better than average strings.

In addition, both the core wires and the plain strings are plated with a smooth, acoustic bronze finish. Though this golden bronze finish does enhance the beauty of your guitar, it's purpose is much more functional - to prolong brightness, string life, and superior tonal quality to meet the high expectations of demanding musicians.  

Gauges: .012; .016; .025; .032; .042; .054

Things You Will Get:

  • Guitar String Set

New Customer


Was my first time using Sam Ash although I have been on 42nd street in New York City. My experience was just great. My question was answered within minutes and the Guitar case was delivered the following day plus I got a discount. Just great, yes you now have a new and very pleased new customer. Thank you very much.


Rockledge Florida


Not loving their sound


I put these on my Yamaha 730 after doing a bone nut and saddle as well. Before hand, I had Yamaha coated strings of the same gauge on the guitar. Since I changed three aspects of the guitar at the same time, there is some uncertainty in attributing the change in sound to specific components. My primary complaint was that I lost way too much from the bass side and wound up with a tinny sound of sorts. After playing the strings for 3 or 4 weeks I put a pack of Ernie Ball Phosphor Bronze 12s on my guitar. The difference was astonishing, I regained my prior tonal qualities with the added sustain from the nut and saddle. I have two more packs of these SPs and may try them out again for another comparison but I love the sound of the Ball strings so much.


Tempe, AZ




This guitar string makes my cheap [*] guitar sounds like angel!




great strings


"these are by far the best strings i have ever tried. i've been playing guitar for over 10 years, changing strings on my guitars at least once a month and trying different sets. there's nothing like having a new-sounding set of strings on your guitar, but when you play for hours a day, every other set of strings loses tone, loudness, and gets that dead sound very quickly. These strings sounded and played terrific when i put them on, and now two weeks later they still sound like new. GREAT STRINGS! "



MSP4100 Phosphor Bronze Light Acoustic Guitar Strings (12-54)

4.3 4


Material Steel
Other Features Bronze
Model MSP4100
Information not available