Firstly, lets check up the audio features. AVH P4200DVD has Supertuner IIID AM/FM tuner that combined the very best of analog tuner and digital applied sciences to lower distortion sounds. Even for those who choose a AM station, the quality sound you get is so clear and so crisp. If you drive in zone the place reception is weak, you’ll get a huge improvement in sign strength. And when you are parking close to skyscraper buildings, Pioneer Supertuner IIID subtracts the effect of multi-path noise, which happens when signal is reflecting off of the buildings. Are you in somewhere new …