An affordable AV receiver is always a good option to consider, so Denon AVRS730H vs Sony STR DH550 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Denon AVRS730H has 7.2 versus 5.2 for Sony STR DH550. Regarding power, then AVRS730H has such a W/Ohm ratio - 75/8, 110/6 when STR DH550 has a power of 90/6. The THD is 0.08% for the AVRS730H but 0.09% for the STR DH550.
Characteristics of digital to analog converter (DAC) are different, 384 KHz/32-bit for AVRS730H and 192 KHz/24-bit for the STR DH550. None of the models support Bi-amping. Sound transmission directly to the amplifier in Pure direct (straight) mode is not implemented in these models.
Only the Denon AVRS730H can connect to the Internet via WI-FI. Only the AVRS730H has Bluetooth support. Only the AVRS730H supports Spotify.
Only the Denon AVRS730H has support for High dynamic range (HDR). Only the AVRS730H 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 AVRS730H.
The Denon AVRS730H has 6/1 HDMI inputs/outputs versus 4/1 HDMI connectors of the Sony STR DH550. The HDMI Audio Return Channel (ARC) feature supports both devices. Unfortunately, HDMI eARC is not available on monitored devices. 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. Receivers do not have a built-in phono stage for connecting a vinyl player. An ECO mode is only available for the AVRS730H. The setup assistant will help you configure Denon AVRS730H.
Only the AVRS730H has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVRS730H.