Amazing phono preamplifier developed by Pro Ject Design in Austria and designed for low noise preamplification and equalization of vinyl records with MM or MC type of pick up cartridges. Can be used as a quality preamplifier for any vinyl turntable and known for its very accurate RIAA equalization, hence high quality sound reproduction. It has rare additional feature to digitize and transfer music from vinyl records to a computer or music storage via USB port. Actually this tiny device is not just a high quality phonostage, but Analog to digital converted to save records in digital form. Details of installation and operation with a computer under Windows or MacOS are in User manual: https://www.project-audio.com/wp-content/uploads/2018/07/manual_phonobox2usb.pdf