What is better - Onkyo TX-SR353 vs Onkyo TX-RZ610?
The number of channels for receivers is different - 5.1 versus 7.2, respectively, for devices. In terms of power, there are differences, the TX-SR353 has such a ratio W/Ohm - 140/6, 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-SR353 received the model 192 KHz/24-bit, but the TX-RZ610 is equipped with AK4458 384 KHz/32-bit. The Bi-amping function is implemented only in the Onkyo TX-RZ610. In the considered devices there is no function transmitting an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet connection via WIFI is only possible with TX-RZ610. Each of the receivers has a Bluetooth connector. The TX-RZ610 has access to the Spotify service. Signaling over HDMI in standby mode can provide the TX-SR353 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-SR353 has 4/1, and the TX-RZ610 has 8/2. HDMI Audio Return Channel is only available on Onkyo TX-SR353. HDMI eARC is not supported by the TX-SR353 and the TX-RZ610. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. TX-SR353 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. 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-RZ610 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the TX-RZ610. Only in the TX-RZ610 realized a DTS:X surround technology.