Sol Republic announced today its first professional-caliber headphone, Sol Republic Master Tracks XC, studio tuned by Calvin Harris. With sound that's acoustically accurate for music artists to use in the studio, and style, lightweight design and durability for use everywhere else, Master Tracks XC over-ear headphones deliver professional-grade sound with a modern headphone design. Tapping into the sonic perfection of multi-platinum producer, recording engineer, singer, songwriter and collaborator Calvin Harris, Sol Republic presents the pinnacle headphone for both music creators and music lovers…