This is the genuine Pro-Ject replacement counterweight for tonearms using the 059 counterweight series. Weighing 118g, it is designed to balance the tonearm correctly so that the vertical tracking force (VTF) can be set accurately for your chosen cartridge.
Pro-Ject uses a numerical code to identify counterweight compatibility with specific tonearm models. The 059 designation is used on a range of entry-level and mid-range Pro-Ject turntables, including the Essential and Essential Phono USB, RPM 1.2 and RPM 1.3 Genie (2M Red and OM3E variants), and 2Xperience Basic+. The 118g mass supports cartridges in approximately the 8 to 15g range, covering most moving-magnet cartridges typically fitted to these decks.
Setting the Tracking Force
The counterweight slides onto the rear stub of the tonearm and is secured in position. To set the tracking force, balance the arm parallel to the platter surface with the anti-skate set to zero, then rotate the calibrated tracking force dial to match your cartridge manufacturer's recommended VTF value. Using the correct counterweight mass ensures the dial operates within the correct range.
Replacement and Upgrade
If your original counterweight has been lost or damaged, or if you are fitting a cartridge that requires a different balance mass, this is the correct replacement part for compatible 059-series Pro-Ject tonearms. Always verify the part code against your tonearm documentation before ordering.