If you don't have acid hands, like I do, these are fantastic strings. They provide that more woody, more Martinesque tone that compelled me to buy my Martin in the first place. Unfortunately, they don't last me as long as most strings, and certainly not as long as Lifespans.
For my Larrivee and Taylor I use nothing but these strings
great tone and the do last!
Compared to the strings I used to buy. These Martin Strings are in every way superior. It feels nice, sounds clear, and look great! Because they are thin strings, it will sound bright but it still sounds solid. Great purchase for the cheap price.
Aside from sounding great the thing I love most about the Martin SP strings is that they don't break. They have never left me stranded in the middle of a set
I've used Martin SP phosphor bronze strings exclusively for years on my Martin D40, Guild D44M, Guild JF65-12, Breedlove American OM/SRe-H and Larrivee OM-3 for years. They feel great, last long and bring out each instrument's true voice. Fantastic for live or studio performance.