The Sony STR-DH790 vs Sony STR-DH770 comparison will be extremely helpful for people who want to get a great, powerful receiver with many functions.
AV receivers under review have the same number of channels. In terms of power, there are differences, the STR-DH790 has such a ratio W/Ohm - 90/6, while the STR-DH770 has a power of 105/6. A common feature for devices is the same total harmonic distortion - 0.09%.
Competitive models use the same DAC. Each of the compared opponents supports Bi-amping. Both Sony STR-DH790 and Sony STR-DH770 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless connection to the Internet via WIFI can not be performed on these receivers. Each of the receivers has a Bluetooth connector. Support for Apple Music Services not implemented. Spotify is not available for these receivers. The quality of 4K/60Hz signal remains unchanged when transmitting from a source to a TV or projector via HDMI for both receivers. Signaling over HDMI in standby mode can provide the STR-DH790 and the STR-DH770. None of the devices can increase the resolution of the incoming video signal. Operation with the Dolby Vision is only possible with the STR-DH790.
The number of HDMI inputs/outputs is the same - 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the STR-DH790. When comparing receivers, it becomes clear that only the Sony STR-DH790 has HDMI CEC. STR-DH790 and STR-DH770 support the standard HDCP 2.2. Unlike most receivers, our models do not have a built-in phono stage for connecting a vinyl player. Voice control of the basic functions of the receiver is not realized in both models. There is an ECO mode in neither AV receiver. The Sony STR-DH790 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the STR-DH790. Only in the STR-DH790 realized a DTS:X surround technology.