Presented at Munich, the GRAVITON Ti tone arm is the latest addition to Wilson Benesch’s GMT analog collection, and an evolution of the articulated arm supplied with the GMT One System turntable, launched in 2023. This new arm has been developed above all to be compatible with the Döhmann Helix One Mk3 turntable.
A true piece of engineering, the GRAVITON Ti is the fruit of collaboration between the brand, the FEMTO Institute (France) and Sheffield Hallam University (UK). It consists of a one-piece moulded carbon fiber tube reinforced by an epoxy and graphene matrix. Its distinctive design incorporates a quadruple helix construction and a Rohacell sandwich core. The latter gives it considerable rigidity and damping, with the aim of guaranteeing the most faithful possible transcription of the musical signal, without the slightest coloration.
Introduced in 1989 by Wilson Benesch, the use of advanced composites came with the development of the A.C.T. One reading arm. Subsequent research carried out as part of the European SSUCHY project confirmed the original design principles of this tone arm, including hyperbolic geometry for material efficiency and strength, 0/90° fiber orientation for maximum torsional rigidity and energy dissipation, and monolithic construction to eliminate the reflective energy boundaries inevitable when multiple parts are used. All this heritage forms the backbone of the GRAVITON Ti tone arm, refined today using state-of-the-art tools.
The arm’s counterweight and pivot structures are made from selective laser sintered (SLS) titanium, developed in collaboration with Dr James Hunt (University of Sheffield), the Advanced Manufacturing Research Centre, Renishaw PLC and Professor Morvan Ouise (Institut FEMTO). Inspired by the natural lattice geometries present in the human anatomy, Wilson Benesch used generative design tools to create tessellated titanium internal structures, in order to maximize stiffness while minimizing weight and offering exceptional damping thanks to the vibrational energy absorbed by titanium.
In addition, the company has adapted the STAGE One over-arm design, originally developed for the GMT One System turntable, for seamless integration on the GRAVITON TI and matching with the Döhmann Helix One Mk3 turntable. The STAGE One allows the arm wire to be terminated in a shielded copper structure less than an inch from the end. The benefit of this design is to minimize exposure of the unshielded signal path to radio frequency interference (RFI) by ensuring its protection at its most vulnerable point. Available to order now, the GRAVITON Ti will not be delivered until the fourth quarter of 2025, at a selling price commensurate with its exclusivity: 39 500 € (£30 000 / $45 000) in matt titanium finish.
06/17/2025
