+ AMG 12J2 Tonearm

The award winning AMG 12J2 12” tonearm features our patented dual-pivot bearing: The vertical bearing, similar to a technique used in helicopter rotors, utilizes 2 steel wires that allow fine azimuth adjustment while eliminating bearing play. The horizontal axle consists of a hardened tool steel needle roller bearing. The aircraft grade aluminum armwand is anodized for resonance control. The 12J2’s internal wiring is multiple stranded high-purity copper, and features magnetic anti-skate and precision locking VTA adjustment.




  • Dual-pivot design instead of standard gimbaled bearing
  • Vertical bearing technology inspired the technique used stabilize the rotor heads of helicopters
  • Uses two 0.5 milimeter thick spring steel wires allows for fine azimuth adjustment while eliminating bearing play
  • Horizontal axle made from hardened tool steel, precision ground to a backlash-free fit with needle bearing
  • Extremely precise and maintenance free

12J2 Bearing cutaway


  • Aircraft-grade aluminum
  • Anodized aluminum tube controls resonance
  • 12 gram effective mass


  • 2-piece with Teflon-decoupled sleeve

Copper Internal Wiring:

  • Multiple gauges of high quality copper

Magnetic Anti-skating:

  • Decoupled via ring magnet and 2 bar magnets
  • Magnetic fields isolated in a patented bearing housing


  • Precision locking system allows for easy adjustment


Effective Length: 304.8mm
Pivot to Spindle Length: 291.4mm
Overhang: 13.4mm
Offset Angle: 17.89 degrees
Effective Mass: 12.2 grams
Null Points: Inner: 66.04mm, Outer: 120.9mm