blue High – Set / Classical Guitar Trebles:Natural CarbonBasses:24K Goldplated woundHigh TensionOPTIMA No.6 24K GOLD STRINGS – This name every concert guitarist has to remember, because these strings are acompletely new dimension. Optima has left behind old patterns and old materials and has simply reinvented the classical guitar string. The bass strings, made of a completelynew core material, wound with with a24 Carat Gold wrapping, result in a string with an extremely fast response and apowerful tone that is sustainable andvery rich in overtones. Here, the sound spectrum remains perfectly balanced. The set is completed with the highly praisedNatural Carbon treble strings.The new NATURAL CARBON delivers a warm but a clear, brilliant sound with a lot of overtones, without sounding sharp. Natural Carbon is a special, new carbon material which combines the advantages of common carbon, nylon and gut.