It makes sense comparing Sony STR-DH790 vs Marantz SR6014 because they both are able to give some premium features.
A significant difference between the receivers in the number of channels, Sony STR-DH790 has 7.2 versus 9.2 for Marantz SR6014. Regarding power, then STR-DH790 has such a W/Ohm ratio - 90/6 when SR6014 has a power of 110/8, 185/6. The THD is 0.09% for the STR-DH790 but 0.08% for the SR6014.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for STR-DH790 and AK4458 384 KHz/32-bit for the SR6014. Both the STR-DH790 and the SR6014 support Bi-amping. 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. Only the SR6014 supports Spotify.
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 SR6014 can scale the input HDMI signal, unlike the STR-DH790. The HDR standard - Dolby Vision is supported by these receivers.
The Sony STR-DH790 has 4/1 HDMI inputs/outputs versus 8/3 HDMI connectors of the Marantz SR6014. The HDMI Audio Return Channel (ARC) feature supports both devices. HDMI eARC is available in each model. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The STR-DH790 supports the protection of digital content of the standard HDCP 2.2, versus HDCP 2.3 in the SR6014. The SR6014 has a built-in phono stage for connecting a vinyl player. An ECO mode is only available for the SR6014. Both STR-DH790 and SR6014 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.