12 C-515BT/C-313Switching the system onPress , TUNER BAND, CD/USB/SD, D.AUDIO/iPod/Bluetooth (C-515BT), D.AUDIO (C-313), AUX button.The [STANDBY/TIMER] LED will go out.The system will switch to the last selected source orthe selected source.Switching the system to standby modePress button.[STANDBY/TIMER] indicator is lit.Volume controlPress VOLUME A button to increase, or pressVOLUME B to decrease the volume level."VOL XX" is displayed. "VOL XX" denotes the volumelevel.To switch off the volume temporarilyPress MUTE button.Playback continues without sound, and "MUTE" isdisplayed.⁄• To restore the volume, press MUTE button again or adjust thevolume.Basic functionSound controlThe sound control system feature enables you toenjoy special sound effects; preset equalizer settingsand bass enhancement, providing the best musicreproduction.To switch on preset equalizer settingsPress SOUND button to select the desired soundeffect: POP, CLASSIC, ROCK, JAZZ, GAME or FLAT(off ).When an effect other than FLAT is selected, the"EQ" icon appears on the display.To switch on the bass enhancementPress X-BASS button.The icon "X-BASS" appears on the display.⁄• To switch off X-BASS, press X-BASS button. The icon "X-BASS"disappears.• EQ and X-BASS functions are not applied to the recordingsound.HeadphonesTo listen to your stereo with headphones (separatelyavailable), use the 3.5 mm phones jack on the mainunit.Connecting headphones mutes the sound fromthe speakers.¤ CAUTION• A warning that excessive sound pressure from earphones andheadphones can cause hearing loss.