Pyramid Super Classic “Double Silver” Professional Line Super Classic strings professional quality strings that are perfect in octaves and very sensitive. They produce a clear and pure sound, are rich in overtones, respond easily, keep their tuning and are comfortable to play. The sound is perfect in any position. The treble strings emphasise through their brilliance the quality of the instrument. The inherent stiffness of any string hinders ease and comfort and also restricts its vibrating qualities. Compared to normal guitar strings, this stiffness is reduced in Super Classics and you will notice the difference. They are available in two types, with either Carbon or Nylon trebles. Carbon versus Nylon Fluoro-carbon (polyvinyliden fluorid) has a higher density compared to nylon. So carbon strings have a smaller diameter than nylon. This results in a decreased bending stiffness and the string vibrates more easily which emphasizes the upper harmonics and results in a more brilliant timbre. Compared with nylon strings, carbon strings are more sensitive to sharp-edged bridges and frets. But past experience has shown that this concerns only the smallest diameters. In summary, the durability of nylon strings is excellent while carbon offers a more brilliant timbre. Code Description 1 to 4 5 to 9 10 + Qty   In Stock 369 Medium Tension Nylon Trebles £ 14.30 £ 14.10 £ 13.90 370 Hard Tension Nylon Trebles £ 14.30 £ 14.10 £ 13.90 371 Extra Hard Tension Nylon Trebles £ 14.30 £ 14.10 £ 13.90 C369 Medium Tension Carbon Trebles £ 15.30 £ 15.00 £ 14.70 C370 Hard Tension Carbon Trebles £ 15.30 £ 15.00 £ 14.70 C371 Extra Hard Tension Carbon Trebles £ 15.30 £ 15.00 £ 14.70