Sony STR-DH790 vs Sony STR-DH190 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Sony STR-DH790 has 7.2 versus 2.0 for Sony STR-DH190. Regarding power, then STR-DH790 has such a W/Ohm ratio - 90/6 when STR-DH190 has a power of 100/8. The THD is the same and is 0.09%. Only the STR-DH790 supports Bi-amping feature. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Both models do not have WI-FI support. Rivals from our review have Bluetooth support. Each of these units does not support Apple Music. Competitors do not have built-in Spotify service. Only the STR-DH790 provides HDMI signal transmission in standby mode. Both competitors are not able to scale the HDMI signal. Dolby Vision technology found support only on the STR-DH790. Only the STR-DH790 supports HDMI Audio Return Channel (ARC). The HDMI eARC is available only on the STR-DH790. Of the two receivers in our comparison, HDMI CEC is present in only the STR-DH790. The STR-DH190 has a built-in phono stage for connecting a vinyl player. A voice control is not available. An ECO mode is not present in each of the AV receivers. The setup assistant will help you configure Sony STR-DH790.
Only the STR-DH790 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the STR-DH790.