The Pro-Ject Signature 45mm Counterweight Insert is a genuine replacement counterweight element designed for use with Pro-Ject Signature series tonearms. The Signature tonearm range sits at the top of Pro-Ject's tonearm lineup, featuring precision-machined aluminium construction and a unique counterweight system that allows cartridges of varying weights to be balanced accurately.
The counterweight insert fits into the main Signature counterweight body, allowing the effective mass and balance point of the arm to be adjusted to suit different cartridge weights and compliance values. Sourcing a direct replacement from Pro-Ject ensures dimensional accuracy and correct fit within the Signature tonearm's counterweight assembly.