With the Pro-Ject VTA it, the vertical tracking angle of the tonearm can be adjusted. You can use it to upgrade turntables, mats and pickups and adjust the tonearm accordingly. VTA it is compatible with Debut I-III, Debut Carbon, Debut Carbon EVO, Essential I-III (only in the standard configurations). A Philips #1 screwdriver & a 5.5mm wrench is required for installation.