The Moth MK3000 (OEM RB3000) tonearm is packed with new features pushing the boundaries of tonearm design. As with all RB tonearms, each one is meticulously hand built by a team of highly skilled technicians. The Moth MK3000 uses improved bearings with each one being hand selected to be an interference fit with the paired spindle matching both the inside and outside diameters.
The entire tonearm structure is designed to have the minimum of mechanical joints whilst using the stiffest materials in all critical areas. The tolerance of the Moth MK3000 tonearm is so tight that no adhesive is used at any point throughout the construction. A brand new, low mass, precision engineered, vertical bearing assembly has been manufactured to further complement the inherent design philosophy.
The Moth MK3000 uses the latest award winning arm tube. Each one which is meticulously hand polished (keeping mass to an absolute minimum) and has been completely redesigned to redistribute mass and further reduce stresses and resonances. This advanced design tube increases the stiffness and rigidity of the overall assembly whilst reducing stress on the bearings even further.
One unique characteristic of these designs is the achievement of near frictionless movement horizontally and vertically whilst having no measurable free play in the bearing assemblies (and in reality one or two microns of pre load).