A fundamental aim of Aquila's research has been to make a new synthetic product having the same acoustic properties as gut, but without its typical defects - (high cost, limited duration and high instability under varying climates). The New Nylgut® has precisely these qualities allowing one to rediscover the sonorities familiar to the great 19th and 20th century Uke masters and guaranteeing a stability of tuning higher even than that of the best gut and nylon strings.