Founded in 2009 as a eartips manufacturer Spinfit first collaborated with Moshi Audio to develop eartip J-430, and in 2010, they patented their famous idea of ergonomic concave design at the core to allow the ear tip to swivel and conform to the contour of a person’s ear canal, and thus the classic CP-100 was born. In the following years, Spinfit has continued to develop multiple different models of various sizes to satisfy the wide range of bore sizes in the IEM market, their reputation has thus been built globally. With Spinfit you can expect a superior comfort and isolation with the medical grade soft material and the unique 3D axis design to achieve a better seal.