As used on the FLHTCUSE4, the Advanced Audio System by Harman/Kardon includes the following:
The radio receiver and CB transceiver are located under the outer fairing/windshield while their antennas are mounted on the Tour-Pak. The XM Satellite and GPS Navigation modules with their antennas are also located under the outer fairing/windshield. Speakers are located in the front fairing and in the passenger backrest. The 40-watt amplifier is located under the Tour-Pak. An intercom receptacle is found on the fuel tank console for the rider and on the backrest for the passenger.

WARNING
Do not change compact discs while riding, and do not select a volume level that blocks out traffic noise. Distractions or a volume level that blocks out traffic noise, could cause loss of control resulting in death or serious injury. (00086a)
NOTICE
There are no serviceable parts inside the unit; leave all servicing to qualified service personnel. Disassembly of the unit could result in equipment damage and/or equipment malfunction. (00172a)

WARNING
Do not disassemble unit. Laser radiation is present if disc player is disassembled and the interlock fails or is defeated. Exposure to laser radiation could lead to death or serious injury. (00087a)

WARNING
Set volume levels and other controls on audio and electronic devices before riding. Distractions can lead to loss of control, resulting in death or serious injury. (00088b)
Stereo Receiver
All Advanced Audio modules utilize a common stereo receiver. The receiver is an AM/FM/WB band radio with an auxiliary (AUX) port. The receiver also supports a full function CD/MP3 player. Auxiliary audio devices, MP3 players, cassette players, and mini-disc players, can play through the receiver's amplifier and speakers when connected to the AUX port.
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 compatible.
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).
Citizen Band (CB) Transceiver
The Citizen Band (CB) radio is a 40 channel digitally tuned transceiver. It can be voice activated by either the rider or passenger.
XM Satellite Radio
Broadcasting from satellites in geosynchronous orbits, XM is a commercial S-Band radio offering a variety of programming channels. See the separate XM Satellite Radio operator's manual for activation and operation.
GPS Navigation System
Receiving positional data from Global Positioning Satellites, the GPS Navigation module locates the motorcycle on a road map digitally stored in the module. After selecting a destination, turn directions displayed in the LCD and announced through the headset/speakers direct the rider to that destination. See the separate Advanced Audio GPS Navigation operator's manual for operation.