An affordable AV receiver is always a good option to consider, so Yamaha RX-V483BL vs Sony STR DH550 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Yamaha RX-V483BL has 5.1 versus 5.2 for Sony STR DH550. Regarding power, then RX-V483BL has such a W/Ohm ratio - 80/6 when STR DH550 has a power of 90/6. The THD is the same and is 0.09%.
Characteristics of digital to analog converter (DAC) are different, Burr-Brown 192 KHz/24-bit for RX-V483BL and 192 KHz/24-bit for the STR DH550. Only the RX-V483BL supports Bi-amping feature. Sound transmission directly to the amplifier in Pure direct (straight) mode is not implemented in these models.
Only the Yamaha RX-V483BL can connect to the Internet via WI-FI. Only the RX-V483BL has Bluetooth support. Only the RX-V483BL supports Spotify. Only the RX-V483BL provides HDMI signal transmission in standby mode. The RX-V483BL can scale the input HDMI signal, unlike the STR DH550. Dolby Vision technology found support only on the RX-V483BL.
Each receiver has 4/1 HDMI inputs/outputs. 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. A voice control is not available. An ECO mode is only available for the RX-V483BL. Unfortunately, the setup assistant is not available in each of the models.
None of the rivals equipped with Dolby Atmos multichannel audio decoder. The receivers do not support the surround sound technology DTS:X.