Thomastik-Infeld Spirocore Cello Strings

Overview

The Spirocore G + C set (Set No. S3233) is Thomastik-Infeld’s iconic lower-string combination for cellists who need maximum clarity and projection from the bottom end of the instrument. With a flexible spiral (rope) steel core and tungsten outer windings, these strings are renowned for a tone that is brilliant, focused, and powerful—yet still musical and warm.

Sound Profile

• G String (S32): Tungsten-wound rope core for a radiant, carrying low-mid that stays tight under heavy bow pressure.
• C String (S33): Tungsten-wound rope core for a deep, resonant bass with clean articulation and strong pizzicato sustain.

Playability

The pair speaks instantly, cuts through dense textures, and tolerates assertive bow weight without losing centre. Break-in is short, and the feel remains supple and predictable, making fast passages and register shifts feel effortless.

Technical Specifications

• Core: Flexible spiral (rope) steel on both strings
• Outer Winding: Tungsten (both)
• Tension (Medium): G 14.0 kg, C 13.5 kg (Total 27.5 kg)
• End Type: Crimped ball ends (G: Nickel, C: Brass)

Ideal For

Professional and advanced players who want a lower-string package that combines bright projection with resonant depth and workhorse durability—perfect for concertos, recitals, and principal orchestral roles.