AMG 12J2 Tonearm

The award winning AMG 12J2 12” tonearm features their patented dual-pivot bearing.

The award winning AMG 12J2 12” tonearm features AMG’s 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.

ABOUT

Bearing:

  • 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 is a hardened tool steel, precision ground to a backlash-free git with a needle roller bearing
  • Horizontal axle made from hardened tool steel, precision ground to a backlash-free fit with needle bearing
  • Extremely precise and maintenance free

 
Armwand:

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

 
Counterweight:

  • 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 our patented bearing housing

 
VTA:

  • Precision locking system allows for easy adjustment

 

SPECIFICATIONS

  • 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