The name Stradivarius is associated with violin

Violin

The violin is a string instrument, usually with four strings tuned in perfect fifths. It is the smallest, highest-pitched member of the violin family of string instruments, which includes the viola and cello....

s built by members of the Stradivari family, particularly Antonio Stradivari

Antonio Stradivari

Antonio Stradivari was an Italian luthier and a crafter of string instruments such as violins, cellos, guitars, violas, and harps. Stradivari is generally considered the most significant artisan in this field. The Latinized form of his surname, Stradivarius, as well as the colloquial, "Strad", is...

. According to their reputation, the quality of their sound has defied attempts to explain or reproduce, though this belief is controversial. The name "Stradivarius" has become a superlative often associated with excellence; to be called "the Stradivari" of any field is to be deemed the finest there is.