D'Addario KS612-34M double bass string E-2, medium, stranded steel, nickel wound, soloD'Addario KS612 34M double bass string E 2, medium, stranded steel, nickel wound, solo Designed for A E B F# tuning, the Kaplan Solo Bass set delivers the exceptional bow response and tonal balance of the Kaplan Orchestral set, along with the additional projection and clarity needed for soloistic playing. The strings are balanced across the set, allowing players to achieve precise articulation and clarity without sacrificing volume or beauty of tone.