This is the Phono BOX ULTRA500, a limited edition phono equalizer from Pro-Ject, compatible with both MM and MC cartridges. I am selling it because I have purchased a different product. I used it about once a week for approximately two years. Please check the attached photos for the product condition. The mirror finish makes dirt noticeable, but it should not affect the sound quality. Operation has been confirmed, and all accessories are included. I believe this is a rare model, so please consider purchasing it as soon as possible. *Please refrain from purchasing if you are sensitive to used items stored at home. m(__)m