PhD Baritone Ukulele Strings - Low D The PhD Baritone Ukulele Strings utilize a premium high-density PVDF polymer to produce superior volume and sustain compared to traditional nylon. Because these strings feature a higher molecular weight, the PhD Baritone Ukulele Strings deliver a deep, rich low sound that is perfect for players using the D-G-B-E tuning with a low D. Scientifically Optimized PhD Baritone Ukulele Strings Scientifically optimized by Jason Arimoto, PhD, these professional-grade strings ensure exceptional playability and clear resonance across the entire fretboard. While they are endorsed by six-time Grammy Award-winner Daniel Ho, the PhD Baritone Ukulele Strings remain an accessible upgrade for any musician seeking a high-performance, high-density string set. Specifications: BARITONE ukulele strings D-G-B-E with LOW D. Get the great low sound of the baritone ukulele. TUNED: D-G-B-E with LOW D "Fantastic! Bright without being too loud and really soft and silky on the fingers." - Cameron Murray, Kamuke Ukulele Magazine