Having had an opportunity to test Onkyo TX-SR393 vs Yamaha R-N602BL, 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 2.0, respectively, for devices. In terms of power, there are differences, the TX-SR393 has such a ratio W/Ohm - 80/8, 155/6, while the R-N602BL has a power of 115/8, 105/4. The value of total harmonic distortion is also different, and for the TX-SR393 it is 0.08%, but for the R-N602BL it is 0.01%.
The manufacturer installed different DACs, the TX-SR393 received the model AKM 384 KHz/32-bit, but the R-N602BL is equipped with Burr-Brown 192 KHz/24-bit. None of the compared opponents supports Bi-amping. The model R-N602BL can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet connection via WIFI is only possible with R-N602BL. Each of the receivers has a Bluetooth connector. The R-N602BL has access to the Spotify service. HDMI signal transmission in standby mode can provide only the TX-SR393. Video scaling is only possible with the TX-SR393. Operation with the Dolby Vision is only possible with the TX-SR393. HDMI Audio Return Channel is only available on Onkyo TX-SR393. HDMI eARC is not supported by the TX-SR393 and the R-N602BL. When comparing receivers, it becomes clear that only the Onkyo TX-SR393 has HDMI CEC. In the presence of a built-in phono stage for connecting a vinyl player only at Yamaha R-N602BL. Voice control of the basic functions of the receiver is not realized in both models. There is an ECO mode in R-N602BL. None of these units can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the TX-SR393. Only in the TX-SR393 realized a DTS:X surround technology.