For once the name matches the product

These are the strings that I use on both of my acoustic guitars one, a 26 year old Fender Newporter with solid sapele top and back, and the other a Washburn WD200SWM solid rosewood and sitka acoustic. The character of each guitar is pronounced beautifully by these strings, chords ring out beautifully with distinction between them and single notes pop with the unique character of each guitar. While these do sound rather tinny and clangy initially, and the break-in period takes longer the tone once broken in is phenomenal. The strings provide richness evident in two string harmonies, strummed and plucked chords, and harmonic notes. Sustain is unbelievable with the SP line and so too is longevity, these typically last more than a month even with daily play for me. I highly recommend any of the SP line of strings because of their honesty of tone, structural integrity, warmth, brightness, and sweetness. Martin SP's go above and beyond the call and are a terriffic value.

Reviewed by Brandon on 6/13/2008 who plays alternative country, country, folk, indie rock and anything else with grit.