Marantz AV7703 vs Sony STR-DH190 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Marantz AV7703 has 11.2 versus 2.0 for Sony STR-DH190. The THD is 0.08% for the AV7703 but 0.09% for the STR-DH190. Only the AV7703 supports Bi-amping feature. 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 AV7703 supports Spotify.
Only the Marantz AV7703 has support for High dynamic range (HDR). Only the AV7703 provides HDMI signal transmission in standby mode. The AV7703 can scale the input HDMI signal, unlike the STR-DH190. Dolby Vision technology found support only on the AV7703. Only the AV7703 supports HDMI Audio Return Channel (ARC). Unfortunately, HDMI eARC is not available on monitored devices. Of the two receivers in our comparison, HDMI CEC is present in only the AV7703. These compared receivers have a built-in phono stage for connecting a vinyl player. An ECO mode is only available for the AV7703. The setup assistant will help you configure Marantz AV7703.
Only the AV7703 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AV7703.