I ended my 42 year love affair with a major guitar string manufacturer after playing on a set of Blue Magic Rock Maximum Output for over 4 months with no loss of tone quality and zero tuning issues. Playing outside gigs in the Florida humidity and salty air destroys other guitars strings in a single gig – but not Blue Magic guitar strings. Thanks to the superior design of Blue Magic strings, not only do they last longer by months, there’s no harsh overtones in my guitar tone or ripped up fingers after hours of playing in rehearsal, in the studio tracking or on the big stage!!!