Currently this app controls Dual's Head unit products via Bluetooth.This app controls most of the primary functions of your marine stereo features including:

Mode change - Radio USB Bluetooth iPod Aux in
Radio - FM1 FM2 FM3 AM1 AM2 and 7-channel Weather band. Seek/Tune frequencies Access the preset stations Store the radio stations etc.
USB input - Playback the music from USB connected to the source unit. Search the songs in music list ID3 display (Song Title Artist Album) Track Up / Down Play / Pause
Bluetooth - Music streaming Play / Pause Track Up / Down ID3 tag display (Song Title Artist Album)
iPod/iPhone/iPad control - Playback the music from iPod/iPhone/iPad connected to the source unit via USB port Play / Pause Track Up / Down ID3 Tag Display
Auxiliary input - Audio control
3 Zone speaker control (Zone 1 2 3)
7 Preset EQ curves (Pop Rock Jazz Classical Beat Flat User)
3 Band tone control (Bass/Mid/Treble)

For some models the Dual iPlug app operates just as a remote controller.

*App capabilities vary with the stereo’s feature set.