Why rely on your receiver for up converting and Switching? Multi format Switchers accept various signals, convert them and then output multiple input video formats on a single output format. This can allow you to run one cable, or less cables to the display. External, stand alone processor/switchers also usually do a better job of video processing than inexpensive DVD players or Receivers can. They also allow you to get more life from an older high quality receiver or "Pre/Pro/AMP" combination before upgrading.