VPI Industries JMW 12 3D Tonearm

VPI Industries JMW 12 3D Tonearm



VPI - JMW 12 3D Tonearm


The arm looks like a traditional VPI Unipivot arm, except it's made in a 3D printer. The material is basically epoxy, which forms a rigid, lightweight, structure with good insulation properties. Epoxy is non-crystalline which impedes the transfer of vibration, so it’s the perfect material for tone arms. The shape of the tone arm shaft also adds rigidity to the structure and further prevents the transmission of surface vibrations. The result is a low resonance lightweight tone arm.


  • Pivot to spindle: 300 mm
  • Effective length: 313.0 mm
  • Effective mass: 10.5g.
  • Overhang: 13mm
  • Offset angle: 17.37 degrees
  • Average RMS distortion: 0.311%
  • Internal wiring: premium Discovery wire, optional Nordost Reference wire.
  • New design 3d printed one piece body for the ultimate in resonance control.
  • Full length copper shielding tube internally
  • Adjustable side weights for finer azimuth settings.
  • Built in “Easy lift” finger lift.
  • Offset stainless steel counterweight for stability
  • Easy setting of VTA/SRA in thousandths of an inch, calibrated and repeatable
  • Adjustable anti-skate.

This tonearm is backwards compatible and will fit on all past and current VPI Turntables. It is printed in 10, and 12 inch arm lengths.

JMW 3D compatibility as 5/16/2013

  • Classic 1
  • Classic 2
  • Classic 3
  • Classic 4 (secondary arm only)