I own a Denon reciever and absouletly love it, it is the avr-1700 which is a couple years old, still has dolby digital though. I know that the Denon will play through the sub line out on 5 channel stereo (a mode that i enjoy for music). As far as the DAC go, SACD and DVD-Audio are the only things that run at those high a rates. DVD-Audio, and soon SACD, use the 6 channel inputs which are never put into a digital domain once in the reciever. So it doesn't even use the DAC for those. The only thing right now that can utilize a digital in is your usual CD, MD, etc. and DVD which runs at 96kHz. The analog inputs all have to run through analog to digital converters before the can be processed and go through the DACs. The ADCs in both recievers are probably 16 bit/44.1kHz. So anything using analog is not going to be able to benefit fromt he 192 DACs. Either way your going to get a good product, my biased opinion is the Denon. Look at the amount of inputs and other features, like usability. Try both out and check and see which sound you like better. That is the real test. Good luck.