GRADO REFERENCE SIGNATURE CELLULE

The Master and Reference models use a five piece OTL cantilever technology achieving an additional 5% tip mass reduction over the Platinum and Sonata models. The coils are wound with ultra-high purity long crystal (UHPLC) oxygen free copper wire. The Master model is mounted with Grado's specially designed nude elliptical diamond, and the Reference model uses Grado's true ellipsoid design diamond.