Brand: Pro-ject
The Pro-ject 4 is not a specific product in the Pro-ject lineup. The Pro-ject brand offers a wide range of turntables, tonearms, cartridges, and accessories, but the Pro-ject 4 model does not appear to be included in their current product line. It's possible that this model has been discontinued or renamed, or it could be a model that was introduced in the past and has since been superseded by newer versions. If you have more information about the Pro-ject 4, please provide it, and I'll do my best to assist you further.