Having had an opportunity to test Denon AVRS530BT vs Onkyo TX-NR545, 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 - 5.2 versus 7.2, respectively, for devices. In terms of power, there are differences, the AVRS530BT has such a ratio W/Ohm - 70/8, 90/6, while the TX-NR545 has a power of 100/6. A common feature for devices is the same total harmonic distortion - 0.08%.
The manufacturer installed different DACs, the AVRS530BT received the model 192 KHz/24-bit, but the TX-NR545 is equipped with Hi-Grade 384 KHz/32-bit. The Bi-amping function is implemented only in the Onkyo TX-NR545. 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. The TX-NR545 has access to the Spotify service.
Support for the HDR function can only boast of each of the AV receivers. 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 AVRS530BT and the TX-NR545. None of the devices can increase the resolution of the incoming video signal. Review participants do not have the Dolby Vision feature.
The number of HDMI inputs/outputs varies depending on the receiver, the AVRS530BT has 5/1, and the TX-NR545 has 6/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the AVRS530BT and the TX-NR545. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. AVRS530BT and TX-NR545 support the standard HDCP 2.2. Unlike most receivers, our models do not have a built-in phono stage for connecting a vinyl player. Voice control of the basic functions of the receiver is not realized in both models. There is an ECO mode in AVRS530BT. The Denon AVRS530BT and the Onkyo TX-NR545 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the TX-NR545. A DTS:X surround technology is not supported by devices from our comparison.