AMG 12J2

“… truly ingenious bit of engineering…” – Michael Fremer, The Absolute Sound, October 2012

Hear the 12J2 Tonearm



  • 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


  • Machined from solid aluminum
  • Bayonet mount with overhang calibration
  • Pre-cut for AMG and Graham fixed mount
  • Custom cutouts available

Additional information

Effective Length

304.8 mm

Distance from Pivot to Turntable Center

291.4 mm


13.4 mm

Offset Angle

17.89 degrees

Effective Mass

12.2 grams

Null Points

Inner: 66.04 mm, outer: 120.9 mm

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