Tri-Planar MkII

About the Tri-Planar MkII

The Wheaton Tri-Planar Mk.II is a precision gimbal-bearing tonearm designed by Herb Papier and introduced in 1981. Originally presented as the Wheaton Decoupled Arm, it was later renamed Tri-Planar to reflect its adjustment of three aspects of tonearm geometry. The Mk.II provides extensive setup adjustment, including vertical tracking angle, azimuth, tonearm height, tracking force, and damping. It has a 250 mm effective length, 233.5 mm pivot-to-spindle distance, 16.5 mm overhang, and approximately 11 g effective mass.