D'Addario XL ProSteels utilize an exclusive corrosion-resistant
steel alloy that delivers super-bright tone without shrill
overtones. They offer a palette of harmonically rich, brilliantly
penetrating highs combined with pronounced, tight-and-tough lows.
XL ProSteel electric bass strings utilize a stainless steel wrap
wire, enhancing the strings' interaction with magnetic pickups,
producing a distinctively bright and present tone.