HONDA P-81ACRD - Manual (Page 104)

S ource display
Volume control
S ound mix
Volume
 P ress the + to increa se volume and - to decrea se volume.
 You can also directly touch the point of the volume bar you wish to set volume for faster
response.
S ound mix
 T he S ound mix option will allow the user to mix audio with the OE M radio during
Navigation commands and Blue-tooth playback.
Sound: