The Pro-Ject VTA is a precision tool designed to adjust the vertical tracking angle (VTA) of a tonearm on a turntable. This adjustment is crucial for optimizing the relationship between the stylus and the record grooves, which can affect sound quality. The VTA system allows for easy and accurate adjustments without requiring a complete disassembly of the tonearm. Users can make real-time adjustments while listening, enabling finer tuning of their audio setup. It typically features a robust construction to withstand regular use, ensuring durability and stability during adjustments. Specifications may include compatibility with various tonearm models, a user-friendly mechanism for height adjustment, and a clear scale for precise settings.