6Listening to Aux deviceSleep mode, Dimmer, USB ChargingUsing the Aux line-in JackYou can play any audio device that has a line out or headphone jack through the iD37 via the aux line-in Jack.1. Plug one end of a standard 3.5mm stereo audio patch cord (not included) into the headphone or line-out jack on yourdevice and the other end of the patch cord into the aux line-in Jack located on the back of the unit.2. Press the Radio/Aux Button once or twice until “aux” appears in the lower part of the display.3. Turn on and play your device.4. Press the or Button to adjust the iD37 volume. You may need to adjust volume on your audio device, too.5. Press the EQ Button to select EQ mode then press the << or >> Button to adjust Treble, Bass, and Left/Right Balance.6. To turn off the unit, press the Button. Please remember to turn off your device, too.Sleep OperationSleep mode lets you sleep to your iPhone/Pod or radio, gradually lowering the volume until the unit shuts off at the selected time.1. Press the Sleep Button to enter sleep mode. The sleep time will show in the lower display.2. Press the Sleep Button again as needed to adjust the sleep timer to 120, 90, 60, 30, 15 minutes or OFF.3. When the display changes back to show the real time, press the Sleep Button once to show the sleep time remaining.Pressing it again will change sleep time to the next lowest increment.4. The unit has independent volume setting for sleep mode so you can adjust the sleeping volume without affecting the normalvolume. The sleep volume will remain at that level the next time you enter sleep mode until controls are changed.5. To stop listening at any time, press the Button to turn unit off.Dimmer OperationDuring normal operation, press the Snooze/Dimmer Button to control the brightness of the LCD display.Charging a USB DevicePlug one end of a USB cable (not included) into the device you wish to charge and the other into the USB port located on theright side of the unit. Observe the charging status on your deivce. If the device is not charging, switch the USB circuit switchto the other position. Note: Some devices use a proprietary USB connections and cannot be charged by the iD37.Using the Unit in Other CountriesDifferent regions of the world use different FM radio frequency steps and ranges. You will need to select the one that matchesthe standards in your region (USA, EUROPE, JAPAN, AUSTRALIA,or CHINA). The default setting is USA; if you live in the US,you may skip this section.1. Make sure the iD37 is OFF (not playing in any mode). Press and hold the Radio/Aux Button for about 5 seconds until“USA” appears in the lower part of display. Press the << or >> Button to adjust country frequency to your region.2. Press the Radio/Aux Button again (or no button within 5 seconds) to exit the radio frequency setting mode.