It’s strongly recommended to compare different receivers if you want to choose the best one: Yamaha RX-V581 vs Onkyo TX-RZ720.
AV receivers under review have the same number of channels. In terms of power, there are differences, the RX-V581 has such a ratio W/Ohm - 115/6, while the TX-RZ720 has a power of 175/6. The value of total harmonic distortion is also different, and for the RX-V581 it is 0.09%, but for the TX-RZ720 it is 0.08%.
The manufacturer installed different DACs, the RX-V581 received the model Burr-Brown 192 KHz/24-bit, but the TX-RZ720 is equipped with VLSC 384 KHz/32-bit. Each of the compared opponents supports Bi-amping. Both Yamaha RX-V581 and Onkyo TX-RZ720 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. Both devices can work with such Apple Music services: AirPlay. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Yamaha RX-V581 works with Pandora, JUKE, but the Onkyo TX-RZ720 works with Deezer, TIDAL, TuneIn Radio. The quality of 4K/60Hz 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-V581 and the TX-RZ720. None of the devices can increase the resolution of the incoming video signal. Operation with the Dolby Vision is only possible with the TX-RZ720.
The number of HDMI inputs/outputs varies depending on the receiver, the RX-V581 has 4/1, and the TX-RZ720 has 7/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the RX-V581 and the TX-RZ720. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. RX-V581 and TX-RZ720 support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Onkyo TX-RZ720.
Ability to create 2 Multi zones inherent in both AV receivers. Voice control of the basic functions of the receiver is not realized in both models. There is an ECO mode in RX-V581. The Yamaha RX-V581 and the Onkyo TX-RZ720 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.