Thomastik-Infeld S33 Spirocore Cello C String
String: C
Tension: Medium
Winding: Tungsten
Core: Spiral (Spirocore)
Thomastik-Infeld S33 Spirocore cello C strings feature Thomastik-Infeld’s spiral steel core design paired with a dense tungsten winding, producing a focused, powerful low register with exceptional responsiveness.
The Spirocore spiral core, first developed by Thomastik-Infeld in 1957, allows the string to vibrate freely while maintaining stability under bow and finger pressure. The tungsten winding increases mass without excessive diameter, resulting in strong projection, quick response, and a clear, defined fundamental on the C string.
Medium tension provides a balanced feel suitable for a wide range of instruments and playing styles. Spirocore cello strings are widely used by professionals for their durability, consistent performance, and long service life.
This string is suitable for orchestral, chamber, and solo applications where clarity, depth, and reliability in the lower register are required.
