It makes sense comparing Sony STR-DH770 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-DH770 has such a W/Ohm ratio - 105/6 when RX-V683BL has a power of 90/8, 150/4. The THD is 0.09% for the STR-DH770 but 0.06% for the RX-V683BL.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for STR-DH770 and Burr-Brown 192 KHz/24-bit for the RX-V683BL. Both the STR-DH770 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. 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-DH770. Dolby Vision technology found support only on the RX-V683BL.
The Sony STR-DH770 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. Unfortunately, HDMI eARC is not available on monitored devices. Of the two receivers in our comparison, HDMI CEC is present only in the RX-V683BL. Both models support the standard HDCP 2.2. The RX-V683BL has a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. A voice control is not available. An ECO mode is only available for the RX-V683BL. The setup assistant will help you configure Yamaha RX-V683BL.
Only the RX-V683BL has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the RX-V683BL.