Designed for guitarists seeking to combine comfort and projection, the Martin Kovar MK1012rely on a specific alloy combining iron, nickel, and cobalt. This design aims for excellent aging resistance while preserving a balanced harmonic response: crystal-clear treblesto make the courses sing, and present bassesto support the typical tuning of a 12-string folk guitar. Thanks to their thermal stability, these strings remain more stable against temperature and humidity variations, helping to maintain reliable tuning both in rehearsals and on stage.