The Marantz SR5014 vs Onkyo TX-NR777 comparison proves that these receivers have many common features.
Considered AV receivers have the same number of channels 7.2. Regarding power, then SR5014 has such a W/Ohm ratio - 100/8, 180/6 when TX-NR777 has a power of 110/8. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, AK4458 384 KHz/32-bit for SR5014 and 384 KHz/32-bit for the TX-NR777. Both the SR5014 and the TX-NR777 support Bi-amping. The Marantz SR5014 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 Marantz SR5014 has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The SR5014 can work with the audio stream from Deezer, TIDAL, Pandora, Napster, TuneIn Radio, iHeart Radio, and the TX-NR777 can receive a content from TIDAL, Pandora.
Both AV receivers support HDR10 technology (High dynamic range). Compared AV receivers retain the quality of 4K/60Hz signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. The SR5014 can scale the input HDMI signal, unlike the TX-NR777. The HDR standard - Dolby Vision is supported by these receivers.
The Marantz SR5014 has 8/2 HDMI inputs/outputs versus 7/2 HDMI connectors of the Onkyo TX-NR777. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the SR5014. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The SR5014 supports the protection of digital content of the standard HDCP 2.3, versus HDCP 2.2 in the TX-NR777. These compared receivers have a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. An ECO mode is only available for the SR5014. Both SR5014 and TX-NR777 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.