Pirastro’s Permanent Cello Strings are steel strings with a powerful, clear sound and quick response. They are durable and stay in tune easily. The A and D strings have a steel core and are wound with chromsteel, while the G and C strings have a rope core and are wound with tungsten. The A and D strings are exceptionally brilliant, while the G and C strings provide a big and powerful sound with a short decay. These strings are known for their exceptional tuning stability, immediate playability, and suitability for electric or electrically-amplified cellos.