An affordable AV receiver is always a good option to consider, so Denon HEOS AVR vs Marantz NR1711 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Denon HEOS AVR has 5.1 versus 7.2 for Marantz NR1711. Regarding power, then HEOS AVR has such a W/Ohm ratio - 50/8, 65/6 when NR1711 has a power of 50/8, 70/6. The THD is 0.05% for the HEOS AVR but 0.08% for the NR1711. Only the NR1711 supports Bi-amping feature. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. Spotify can be used on each receiver. The HEOS AVR can work with the audio stream from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, and the NR1711 can receive a content from Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud. HDMI signal transmission in standby mode is implemented in each of the devices. The NR1711 can scale the input HDMI signal, unlike the HEOS AVR. Dolby Vision technology found support only on the NR1711.
The Denon HEOS AVR has 4/1 HDMI inputs/outputs versus 6/1 HDMI connectors of the Marantz NR1711. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the NR1711. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The HEOS AVR supports the protection of digital content of the standard HDCP 2.2, versus HDCP 2.3 in the NR1711. The NR1711 has a built-in phono stage for connecting a vinyl player. The HEOS AVR supports voice control via Amazon Alexa, Google Assistant, and the NR1711 - Amazon Alexa, Google Assistant, Siri, Josh.AI. An ECO mode is only available for the NR1711. The setup assistant will help you configure Marantz NR1711.
Only the NR1711 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the NR1711.