Simple to use and great results!
Crutchfield Customer Review (What's this?)
The microphone was really simple to use to get my Pioneer AVH-4200NEX tunes in perfectly. However, it did take me a minute to figure out that I needed to have the parking brake engaged to get the automatic tuning feature to become available.
Pros: Worked great in my 2008 Subaru Impreza STI with my Pioneer AVH-4200NEX!