Having had an opportunity to test Yamaha RX-A4A vs Onkyo TX-NR7100, I’d like to share my impression here to facilitate your choice of a new AV receiver.
The number of channels for receivers is different - 7.2 versus 9.2, respectively, for devices. In terms of power, there are differences, the RX-A4A has such a ratio W/Ohm - 110/8, while the TX-NR7100 has a power of 100/8, 220/6. The value of total harmonic distortion is also different, and for the RX-A4A it is 0.06%, but for the TX-NR7100 it is 0.08%.
Competitive models use the same DAC. Each of the compared opponents supports Bi-amping. Both Yamaha RX-A4A and Onkyo TX-NR7100 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
These units have the same Wi-Fi modules. Each of the receivers has a Bluetooth connector. Both devices can work with such Apple Music services: AirPlay, AirPlay 2. Access to the Spotify service is on each of the competitors. Most popular streaming services are available for our models under consideration - Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud.
The HDR10+ function is present in each of the rivals. The quality of 4K/120Hz signal remains unchanged when transmitting from a source to a TV or projector via HDMI for both receivers. Signaling over HDMI in standby mode can provide the RX-A4A and the TX-NR7100. Each of the devices can increase the resolution of the incoming video signal. Each of the participants of the comparison has a Dolby Vision.
The number of HDMI inputs/outputs varies depending on the receiver, the RX-A4A has 7/3, and the TX-NR7100 has 7/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is supported by the RX-A4A and the TX-NR7100. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. RX-A4A and TX-NR7100 support the standard HDCP 2.3. Like most receivers, our models have a built-in phono stage for connecting a vinyl player.
Ability to create 2 Multi zones inherent in both AV receivers. Voice control is performed using Amazon Alexa, Google Assistant, Siri, Josh.AI in both models. There is an ECO mode in either AV receiver. The Yamaha RX-A4A and the Onkyo TX-NR7100 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available both models. A DTS:X surround technology is supported by devices from our comparison.