Several years of development led to the Pro Arte series where the diameter of each strand was checked 200 times using a sophisticated computerized laser system. This extremely careful quality control guarantees an absolutely high and consistent standard of the strings, from set to set. The bass strings are precision spun with a silver-plated copper wire over a nylon core, which gives the string its warm and distinct tone. According to many concert guitarists, the best string set ever created, and it is highly recommended by most guitar teachers.
