When you press or hold the following button(s)...Main unit General operationSRC■■■■■■■■■■■Select the available sources (Radio, USB, SD, BT AUDIO or MP3-LINK ), if the power is turned on.RotatoryVolume knobRotate it to increase or decrease the volume.Select items.Power / Mute Confirms selection.Under Media playback mode to view play informations.BAND■ Select the FM bands (FM1/ FM2/ FM3) or AM1 (MW1) / AM2 (MW2) .■ Under media playback to access into search mode.Pause/resume playback of a USB / SD device.■ Under Radio mode to enter into the Auto Seek mode, press and hold to enter into the Manual Seek mode.■ Under Media playback mode to skip track / file, press and hold to fast forward / backward.MENU To access into the Audio Menu mode, press and hold to enter into the System Menu mode.Turn On or Off dynamic bass boost sound.Turn On or Off the Xbass bosster function.During the talking, press and hold to transfer the call.DBSSTurn mute or restore volume.Turn the unit on. Press and hold again to turn the unit off.1SUB-W Press to view the Clock. Press & hold to turn On or Off the Subwoofer function.Returns to the previous item.To reject / end the call.EQ / XBASSBasic OperationTo adjust the EQ (Preset Equalizer) setting.To answer / accept the call./MENU SUB-WDBSSXBASSBANDSRC EQ1 2 3 4 5 6Detaches thecontrol panelRotary Volume Knob Display WindowPower / MuteUSB terminalAux-In jackPush open the coverEN 5■ Press and hold to activate the Auto Store function.