{HEAD ~ An audio/video device} having {TAIL ~ a volume control function} for external audio reproduction units by using volume control buttons of a remote controller is provided 
having
{ HEAD ~ An audio / video device } having { TAIL ~ a volume control function } for external audio reproduction units by using volume control buttons of a remote controller is provided
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH