• Sound character: Highly focused (direct), clear, and brilliant sound with no audible background noise ("hiss").
• Stability: Excellent tuning stability and completely unaffected by changes in temperature or humidity.
• Response: Excellent, immediate string response for maximum control while playing. 

String variations:

• "Advanced Steel" E-string:a rounder, warmer sound in the highest. Available in gauges: 0.26 mm and 0.267 mm.
• Steel A-string: Inspired by the Russian soloist tradition. The steel A-string delivers a very powerful, brilliant tone and ensures a smooth tonal transition to the E-string.

Core material and winding:

Core: Specially modified synthetic material (based on Evah Pirazzi and Obligato technology).

• E-string: Silvery steel
• E-string: High-quality steel
• A-string: Synthetic core, aluminum winding
• A-string: Steel core, aluminum winding
• D- and G-strings: Synthetic core, silver winding.
• All A, D, and G strings feature a ball end; E-strings are available with either a ball end or a loop end.