An affordable AV receiver is always a good option to consider, so Marantz NR1609 vs Denon AVR-X6700H comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Marantz NR1609 has 7.2 versus 11.2 for Denon AVR-X6700H. Regarding power, then NR1609 has such a W/Ohm ratio - 50/8, 70/6 when AVR-X6700H has a power of 140/8, 175/6. The THD is 0.08% for the NR1609 but 0.05% for the AVR-X6700H. Both the NR1609 and the AVR-X6700H support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
WI-FI modules have the same characteristics: 2.4/5GHz. Rivals from our review have Bluetooth support. The Apple Music service is implemented on considered devices: AirPlay, AirPlay 2. Spotify can be used on each receiver. The NR1609 can work with the audio stream from Deezer, Pandora, TuneIn Radio, and the AVR-X6700H can receive a content from Deezer, TIDAL, Pandora, SiriusXM, Qobuz, TuneIn Radio. HDMI signal transmission in standby mode is implemented in each of the devices. Both rivals can scale the resolution of the incoming HDMI signal. The HDR standard - Dolby Vision is supported by these receivers.
The Marantz NR1609 has 8/1 HDMI inputs/outputs versus 8/3 HDMI connectors of the Denon AVR-X6700H. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the AVR-X6700H. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The NR1609 supports the protection of digital content of the standard HDCP 2.2, versus HDCP 2.3 in the AVR-X6700H. These compared receivers have a built-in phono stage for connecting a vinyl player.
The NR1609 supports 2 Multi-room zones, versus 3 for the AVR-X6700H. Supported voice control technologies are identical - Amazon Alexa, Google Assistant, Siri, Josh.AI. It is also worth noting that the ECO mode is presented in each of the receivers. Both NR1609 and AVR-X6700H can be configured using the Setup assistant.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.