Chris Thile is a world-renowned mandolin player, and he has played many different types of mandolins over the years. He is most associated with the Gibson F-5, which is the type of mandolin that he played on his groundbreaking album "Newgrass Revival." However, he has also played other types of mandolins, including the Flatiron A-5 and theCollings MT.O. He has even made his own mandolins, such as the Bach Concerto model that he played on his recent recording "Bach: Sonatas and Partitas, Vol. 1." No matter what type of mandolin he is playing, Chris Thile's masterful musicianship always shines through.