The Advanced Audio System stereo receiver is a radio (3 band maximum) with a full function Compact Disc (CD)/MP3 player and an auxiliary (AUX) input.

Auxiliary audio devices can play through the receiver's amplifier and speakers when connected to the AUX input port. Auxiliary devices included MP3 players, cassette players, and mini-disc players. Additional genuine Harley-Davidson motor accessories that can utilize the AUX port include:

Road Tech™ HA90 MP3/WMA Digital Music Player
Road Tech™ 75 Radar and Laser Detector
Road Tech™ Quest Portable GPS Navigation System

Receiver features include:

Electronic single in-line CD/MP3 player with track up/down, forward and reverse scan, repeat and random play functions.
CD/CDR/CDRW compatibility.
MPEG 2.5 Level III (MP3) file format compatability.
More than 10 hours of MP3 music - 150 MP3 songs (10 albums) on one 650MB disc.
Anti-skip protection (>40 second memory and mechanical dampers).
Remote controls for frequency tuning, band change, CD select, volume, and bass/treble/fader mixing.
Automatic Volume Control (AVC) - automatically adjusts volume to compensate for ambient noise due to motorcycle speed.
Time-of-day clock.
Weather band frequencies displayed as NOAA channel numbers (active on North American units only).