Definitions for "A/V inputs"
These are the standard RCA jacks that are used to hook up audio and video components to each other. Input jacks allow the signals to be received from other components, and having many inputs is helpful for future system expansion. Audio signals using these RCA jacks are transmitted faithfully, but composite video connections are not considered to be the best because they mix colour and black & white signals together. Although composite connections provide a good quality picture, the best picture quality can be achieved with S-Video or Component jacks.
Refers to the jacks and connections on a specific piece of equipment used to connect multiple sources to a specific piece of equipment. The more inputs you have, the more options you have to upgrade your kit in the future.
Audio/Video inputs are used to connect multiple sources (I.e. CD Player, DVD Player, DSS, etc) to a specific piece of equipment. Having more inputs provides additional upgrading capabilities. Composite connections for video are not as good as S-Video or Component Video.