Having had an opportunity to test Marantz AV8805 vs Onkyo TX-NR7100, I’d like to share my impression here to facilitate your choice of a new AV receiver.
The number of channels for receivers is different - 13.2 versus 9.2, respectively, for devices. A common feature for devices is the same total harmonic distortion - 0.08%.
The manufacturer installed different DACs, the AV8805 received the model AK4490 384 KHz/32-bit, but the TX-NR7100 is equipped with 384 KHz/32-bit. Each of the compared opponents supports Bi-amping. Both Marantz AV8805 and Onkyo TX-NR7100 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. Both devices can work with such Apple Music services: AirPlay, AirPlay 2. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Marantz AV8805 works with Deezer, TIDAL, Pandora, SiriusXM, TuneIn Radio, but the Onkyo TX-NR7100 works with Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud. Signaling over HDMI in standby mode can provide the AV8805 and the TX-NR7100. Each of the devices can increase the resolution of the incoming video signal. Each of the participants of the comparison has a Dolby Vision.
The number of HDMI inputs/outputs varies depending on the receiver, the AV8805 has 8/3, and the TX-NR7100 has 7/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is supported by the AV8805 and the TX-NR7100. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. The AV8805 has support for the standard HDCP 2.2, compared to the TX-NR7100, which supports the standard HDCP 2.3. Like most receivers, our models have a built-in phono stage for connecting a vinyl player.
Unlike the AV8805 where 3 Multi zones is provided, the TX-NR7100 works with 2 Multi zones. Voice control is performed using Amazon Alexa, Google Assistant, Siri, Josh.AI in both models. There is an ECO mode in either AV receiver. The Marantz AV8805 and the Onkyo TX-NR7100 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available both models. A DTS:X surround technology is supported by devices from our comparison.