As discussed in one of the previous answers, Marantz and Denon are now part of the same company and use the same technological solutions (like auto-calibration tools, apps, etc.). The same-priced receivers from Denon and Marantz have similar features and number of connections but there are some subtle differences in sound reproduction – Denon is a bit brighter while the Marantz receivers sound warmer. In the end, it all depends on your taste in sound.