Aquila 4CH Cuatro Venezuelano Set (Nylgut) excessive sensitivity to the atmospheric variations). With thenew synthetic material New Nylgut (synthetic gut) these defects have been eliminated, reproducing the original sound and tones of the Charango, Ronroco and Cuatro and at the same time guaranteeing an excellent tuning stability, with respect to which it can be produced with the best Nylon cords. Nylgut strings include promptness of attack, excellent timbre and a truly remarkable stability of intonation. set / Cuatro 4-string B F# D AMade of New NYLGUTUntil the 1950's, only gut strings were used for the Charango, Ronroco, Timple Canario, and the Cuatro, in which the quickness of the answer was joined with the brilliance of the tones, being the sound very different with respect from the present nylon cords.The investigative work has always had the objective to make an artificial cord that had the same acoustic properties of the gut cords, without its typical defects (short life time, high prices,