It makes sense comparing Sony STR-DH790 vs Yamaha RX-V683BL because they both are able to give some premium features.
Considered AV receivers have the same number of channels 7.2. Regarding power, then STR-DH790 has such a W/Ohm ratio - 90/6 when RX-V683BL has a power of 90/8, 150/4. The THD is 0.09% for the STR-DH790 but 0.06% for the RX-V683BL.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for STR-DH790 and Burr-Brown 192 KHz/24-bit for the RX-V683BL. Both the STR-DH790 and the RX-V683BL support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Only the Yamaha RX-V683BL can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the RX-V683BL 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 RX-V683BL 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 6/1 HDMI connectors of the Yamaha RX-V683BL. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the STR-DH790. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. Both models support the standard HDCP 2.2. The RX-V683BL has a built-in phono stage for connecting a vinyl player. A voice control is not available. An ECO mode is only available for the RX-V683BL. Both STR-DH790 and RX-V683BL 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.