Seguramente la mayoría no notemos esa caída de "rendimiento" sobre todo los que tenemos un oido de mierda como un servidor pero no puedo evitar pensar como Amirm:
"...Let's keep in mind that the discontinuation of AKM DAC ICs hit the entire industry. Desktop DAC companies switched to ESS DAC ICs while more or less maintaining the same performance. Whereas Denon chose to switch to a much lower performance DAC IC and sharply increase the cost of the unit as well. I don't how this should be something acceptable as to encourage the company with a thumbs up.

Let's remember that these products are aimed at enthusiasts and not mass market. This is the tag line for this product at Denon: "Home Theater Enthusiasts Rejoice." Enthusiasts demand the best performance not what may be good enough. For good enough get a $300 AVR or soundbar.!...

if there is enough market elasticity to accept a $500 hit to retail price, they could have gone up $600 and not regressed in performance. It is simply a poor decision to raise price and reduce performance at the same time. The only reason to justify it is the hope that no one like me would test them. This, Denon should have known to be a bad assumption.
"

Por otro lado, si mi ingles no me confunde, el cambio de dac tambien aplica los futuros 4800 y los últimos 3700

¿Marantz?

Un saludo!