Previously, automatic systems I have used either adjusted the volume too dramatically or not enough, forcing me to adjust them manually. While this method worked fine, it did distract my attention from the more important task of operating the motorcycle. This time, however, I could ride in a variety of conditions and have my music playing at just about the ideal volume. The AVM's secret is a microphone cleverly hidden in its headphone connector. Since this microphone is in approximately the same area (in relation to the air flow) as the helmet, the volume is adjusted to match the intensity of the wind noise, instead of some predetermined equation based on bike speed, like those stereos on full-dress touring rigs.