I am looking at purchasing either of these two receivers. I have decided against the 2600, as that only really buys me upscaling, which is not a huge issue for me right now.
So then, I'm looking at these other two models. It's my understanding that these three models are all pretty similar in terms of feature set, with the 1600 offering HDMI upconversion, (rather than upscaling), whereas the 2500 doesn't seem to have any digital (HDMI or DVI) outs.
HOWEVER.... what I'm mostly interested in, since the feature sets are basically similar, with the exceptions above, is the relative quality of the preamp/amp sections in these units. These also seem fairly closely matched, but I've read different things that the upgraded DAC's in the 2600 sound better, etc. These seem to be the same DAC's in the 1600.
In addition, the amp numbers on these units are all a little different.
Given the minimal price differences between these two, similar feature sets... which one of these offers better sound performance? That is the factor I want to base my decision on.