Check the listing for details. D'Addario NS Electric Contempoary Bass D String. Condition: New. Listed at 38.07 USD. Designed in partnership with Ned Steinberger and NS Design, the D'Addario NS Electric Contemporary Bass D String can be used on electric instruments to bring out the best in them. This string is designed to enhance the expressive range of tone sought after by the most discerning players.This D string features a steel core with a nickel winding. The Contemporary Double Bass D String produces a brighter sound and is lower tension than the Traditional double bass D string. The NS Electric Contemporary Double Bass D String is designed for electric upright basses with standard playing lengths, but shorter overall lengths (no tailpiece).All D'Addario strings are designed, engineered and manufactured in the USA to the most stringent quality controls in the industry.