Yamaha RX-V671 vs Sony STRZA1100ES comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Yamaha RX-V671 has 7.1 versus 7.2 for Sony STRZA1100ES. Regarding power, then RX-V671 has such a W/Ohm ratio - 90/8, 150/4 when STRZA1100ES has a power of 70/8, 90/6. The THD is the same and is 0.09%. Both the RX-V671 and the STRZA1100ES support Bi-amping. 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. Only the RX-V671 has Bluetooth support. Each of these units does not support Apple Music. Competitors do not have built-in Spotify service. Compared AV receivers retain the quality of 4K/60Hz signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. Both rivals can scale the resolution of the incoming HDMI signal. Dolby Vision technology found support only on the STRZA1100ES.
The Yamaha RX-V671 has 6/1 HDMI inputs/outputs versus 5/2 HDMI connectors of the Sony STRZA1100ES. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the STRZA1100ES. 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. The RX-V671 has a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. 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 STRZA1100ES.
Only the STRZA1100ES has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the STRZA1100ES.