It would depend on whether, you are going to run an anolog signal, to your a/v processor, such as a tape, or phono. It's purpose, is to keep these signals, from being subjected, to A/D conversion, and then D/A conversion.
Analog Pass Thru
Is analog pass thru important on a high quality a/v processor? I am looking to upgrade from a Citation 5.0 with analog pass thru to a higher quality unit. I was thinking about a Meridian 568 which does not have analog pass thru. Does anyone have any experience with the Meridian 568 in regards to listening to vinyl? My system is used 50% music(analog & digital) and 50% video (dvd).