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.
Becky Plays XL Pro Steels
"These were the first bass strings I fell in love with. I could truly comprehend the differences between these and the strings I used before. These are great for bass players who want to be heard!" – Becky Baldwin
"D'Addario strings sound sound how I want a bright stainless steel string to sound. They have better longevity than any other string I've tried, and they're always great right out of the box." – Bryan Beller