Eclipse Avn133mrc English Manual -

It is normal for the volume levels of different sources (AM, FM, CD, AUX, etc.) to vary. Your AVN133MRC includes a Source Volume Control (SVC) feature. This function allows you to adjust and balance the volume level for each source individually, using the FM radio volume as a reference.

The Eclipse AVN133MRC is a versatile media player. Use the button to cycle through these options on the touchscreen: Radio Tuning eclipse avn133mrc english manual