Helicore Hybrid Series Double Bass strings are multi-stranded steel core strings that produce a moderately warm tone quality. The core design makes for strings that are very easy to play under the left hand. Damping is optimized to create a good balance between pizzicato sustain and bow response, allowing for good performance across many playing styles, from symphonic to jazz or bluegrass.

All D'Addario strings are designed, engineered and manufactured in the USA to the most stringent quality controls in the industry.