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