AVS Forum Special Member
Join Date: May 2011
Location: Ft. Collins, CO
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 477 Post(s)
I would think either one would be an upgrade with the extra features such as networking and front USB port. The 773 also has a full complement of pre-outs if you want to add a beefier amp. The 673 does not have pre-outs except for a subwoofer or pair of subwoofers. That was one of the things I liked about the 665. It came with pre-outs and I used it as a pre-amplifier for a while.
"Guns for show, knives for a pro..."
HT/Living room: FR/FL Sierra 1 NrT, Sierra-1 NrT Center, B&W ASW610, Yamaha RX-A2030, Oppo BDP-93, ATV.
2-channel: B&W 804D, B&W ASW608, Parasound P5, Parasound A23, Marantz CD5004, Rega RP1, Bluesound Node2.