Boss Audio 820BRGB User Manual - Page 8

GENERAL OPERATION (CONT.) Change the Source (SRC) Press the SRC button to switch between RADIO, BT(Bluetooth), USB(with USB device inserted), CARD(with SD card inserted) and AUX-IN(auxiliary input) modes. Mute on/off In power on mode, briefly press the MUTE button to toggle mute on or off. The muted state will be also released when the volume knob is used. Loudness on/off Press the LOUD button on the remote control to turn on the loudness to reinforce the output of bass frequencies, press again to turn it off. Preset EQ (Equalizer) Press the EQ button to toggle between EQ OFF, FLAT, POP, CLASS, ROCK. USB port The USB port of this car radio is designed for media playback from flash memory devices and charging for iPhone / andriod mobile phone. The charging current consumption is 1 ampere. Micro-SD card slot This Micro-SD card slot is designed for media playback from Micro-SD card. Hands-free Microphone To receive your voice when you calling by using this bluetooth handsfree system. Aux input connector The 3.5mm auxiliary input stereo connection is designed for deiveces with 3.5mm line-out or headphone output. Reset System (Reset) The RESET button is used to reset all parameters to factory default settings. This function may be used when the LCD does not display normally or sound is distorted, or when any of controls are disabled. To reset your system, use a thin object with a pointed end to depress the RESET button. 6