What is better - Onkyo TX-NR545 vs Onkyo TX-RZ610?
AV receivers under review have the same number of channels. In terms of power, there are differences, the TX-NR545 has such a ratio W/Ohm - 100/6, while the TX-RZ610 has a power of 100/8, 170/6. A common feature for devices is the same total harmonic distortion - 0.08%.
The manufacturer installed different DACs, the TX-NR545 received the model Hi-Grade 384 KHz/32-bit, but the TX-RZ610 is equipped with AK4458 384 KHz/32-bit. Each of the compared opponents supports Bi-amping. The model TX-NR545 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 Onkyo TX-NR545 works with Tunein Radio, but the Onkyo TX-RZ610 works with TIDAL, Pandora. 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 TX-NR545 and the TX-RZ610. Video scaling is only possible with the TX-RZ610. Operation with the Dolby Vision is only possible with the TX-RZ610.
The number of HDMI inputs/outputs varies depending on the receiver, the TX-NR545 has 6/1, and the TX-RZ610 has 8/2. HDMI Audio Return Channel is only available on Onkyo TX-NR545. HDMI eARC is not supported by the TX-NR545 and the TX-RZ610. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. TX-NR545 and TX-RZ610 support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Onkyo TX-RZ610.
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 TX-RZ610. The Onkyo TX-NR545 and the Onkyo TX-RZ610 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available both models. Only in the TX-RZ610 realized a DTS:X surround technology.