I'm in the process of upgrading my old Panasonic A120 dvd player to a progressive scan model of some sort and I'm also considering the move up to DVD-Audio as well. What do I need exactly, in terms of an A/V receiver? Do I need 6ch analog inputs on my amp or can DVD-A be passed through a digital output/input like an optical cable or coax?? Reason being, my old Sony Str-DE925 (don't laugh, it was decent at the time)is lacking the 6ch. discrete inputs and on top of that surely can't pass the full freq. range of dvd-a. My dvd contenders are the Panasonic Rp-56, rp-91, JVC XV-S60?,or XV-D721, or their new 7disc XV-FA92, Toshiba 3750 or 4700. Don't know if it makes a difference because every TV is a little different but mine is a Toshiba TW56x81. Thanks for any help.