This full set of Passione violin strings 4/4 from Pirastro are medium gauge, and offer a big and powerful sound. The sheep gut core of the Passione violin strings is manufactured, wound and polished in the traditional way - by hand. The core sound is full, round and warm and has a complex overtone spectrum causing brilliance and clarity and a great power of projection. Passione strings possess a fascinating diversity of sounds, which allows musicians to alter their tone as desired. These violin strings offer very easy response on all levels of the dynamic range. The accuracy of the contact point is easily manageable, and they boast a significantly reduced playing-in time: Passione strings are immediately playable, unlike some other gut strings. Altering the gauge by 1/4 PM changes the tension by 3%. For some time, a new trend evolved, especially amongst young classical violinists who search for a full and complex sound, to start experimenting with violin strings with a gut core. Pirastro has now picked up this trend and developed the Passione violin string line. E string: Ball end / Silvery Steel A string: Ball end / Aluminium Winding - Gut Core D string: Ball end / Silver Winding - Gut Core G string: Ball end / Silver Winding - Gut Core Special Features The length of coloured silk at the peg end of the Passione G-string is different than the length of the A- and D- strings. This has been designed intentionally and is part of the construction of the G-string. The special length of the G-string's colour winding at the peg end prevents the string from breaking in the peg box. At the latest after two to three days the stretching process will be finalized. As a result the silk winding will no longer reach over the nut. We have made numerous tests with this special G on various violins all differing in size and the string has always fitted. On some violins it takes longer, with other violins the string even fits from the beginning. About Pirastro strings: Because of the quality of both their strings and rosin, Pirastro has become the byword for a sound which is both beautiful and dependable. As a result, a great number of string musicians play and recommend Pirastro strings. With their tonal flexibility and expressive power, Pirastro strings have inspired musicians to create their own unique sound by taking full advantage of their instruments best qualities. Each individual string in the Pirastro line has been meticulously crafted to provide musicians with an unsurpassed choice in tonal colours. Musicians can choose from the complete range of gut strings (e.g. Passione and Oliv) to synthetic strings (such as Evah Pirazzi and Tonica) or steel (e.g. Flexocor and Chromcor). Finally, Pirastro rosins are designed specifically for use with Pirastro strings and this combination is responsible, in no small part, for the excellent world-renowned Pirastro sound.