Bass Engine Plus (bass center frequency, width, and level, plus treble
center frequency and level adjustments, as well as 4-channel digital time
alignment and a 3-position, 12dB/octave crossover)
Media Xpander
XM Satellite Radio condtrols (XM
Radio subscription, tuner, antenna required to receive the satellite radio
signal.) — service not available in Alaska or Hawaii
CD changer controls for Alpine Ai-NET changers only
