It is our goal that you will always be in tune if you're using any of the products on our website. S.I.T. ("Stay In Tune") Strings was founded on the belief that a guitar string is more than just an accessory of little importance rather, an integral part of a musician’s sound and voice. That’s why, since 1980, we continue to strive for perfection by manufacturing strings by hand, one at a time, all here at the S.I.T. Strings factory in Akron, Ohio USA.