This car stereo is specifically designed for 2001 Audi A6 models and features FM radio, cassette player, and CD player. The cassette player is compatible with audio cassettes and the CD player can play CDs in various formats. The brand of this car stereo is Audi and it comes with a range of features including the ability to adjust the volume, equalizer, and balance. Additionally, it is designed to seamlessly integrate with the car’s internal system for a superior audio experience. This car stereo is perfect for any Audi A6 owner who wants to upgrade their in-car entertainment system.