Spirocore (Thomastik-Infeld, Austria)

These steel strings have a fairly bright sound, not unlike Chromcor, though slightly harder and with a little less warmth.  As with other steel strings, they are very reliable, pitch-wise, and tend to keep their tone for a long time. The Spirocore “tungsten” cello G and C are a very popular, though expensive string for professionals and advanced students.  They have a big, rich sound with good projection.  The “silver” cello G and C strings have a brighter, edgier sound that the “tungsten” and are not so popular. Spirocore tungsten on the C&G is often mixed with the D&A of Larsen. (Available for violin, viola and cello)