Sony STR-ZA3100ES vs Yamaha RX-A1070BL comparison definitely makes sense.
Considered AV receivers have the same number of channels 7.2. Regarding power, then STR-ZA3100ES has such a W/Ohm ratio - 70/8 20Hz-20KHz, 90/6 1KHz when RX-A1070BL has a power of 110/8 20Hz-20KHz. The THD is 0.09% for the STR-ZA3100ES but 0.06% for the RX-A1070BL. Both the STR-ZA3100ES and the RX-A1070BL support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Only the Yamaha RX-A1070BL can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the RX-A1070BL supports Spotify.
These units support HDR technology. Compared AV receivers retain the quality of 4K 60p signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. The RX-A1070BL can scale the input HDMI signal, unlike the STR-ZA3100ES. The HDR standard - Dolby Vision is supported by these receivers.
The Sony STR-ZA3100ES has 6/2 HDMI inputs/outputs versus 8/2 HDMI connectors of the Yamaha RX-A1070BL. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the STR-ZA3100ES. 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-A1070BL has a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. An ECO mode is only available for the RX-A1070BL. Both STR-ZA3100ES and RX-A1070BL can be configured using the Setup assistant.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.
The Yamaha RX-A1070BL is better receiver in this comparison. Check Yamaha RX-A1070BL price