Having had an opportunity to test Pioneer Elite SC-LX704 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 - 9.2 versus 2.0, respectively, for devices. In terms of power, there are differences, the Elite SC-LX704 has such a ratio W/Ohm - 135/8, while the R-N602BL has a power of 115/8, 105/4. The value of total harmonic distortion is also different, and for the Elite SC-LX704 it is 0.08%, but for the R-N602BL it is 0.01%.
The manufacturer installed different DACs, the Elite SC-LX704 received the model ES9026PRO 384 KHz/32-bit, but the R-N602BL is equipped with Burr-Brown 192 KHz/24-bit. The Bi-amping function is implemented only in the Pioneer Elite SC-LX704. Both Pioneer Elite SC-LX704 and Yamaha R-N602BL can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet access via WIFI is possible on both units. Each of the receivers has a Bluetooth connector. The contenders have differences in the supported services from Apple - AirPlay, AirPlay 2 versus AirPlay respectively. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Pioneer Elite SC-LX704 works with Deezer, TIDAL, Pandora, but the Yamaha R-N602BL works with Deezer, TIDAL, Pandora, Napster, SiriusXM, Qobuz. HDMI signal transmission in standby mode can provide only the Elite SC-LX704. Video scaling is only possible with the Elite SC-LX704. Operation with the Dolby Vision is only possible with the Elite SC-LX704. HDMI Audio Return Channel is only available on Pioneer Elite SC-LX704. HDMI eARC is not supported by the Elite SC-LX704 and the R-N602BL. When comparing receivers, it becomes clear that only the Pioneer Elite SC-LX704 has HDMI CEC. Like most receivers, our models have a built-in phono stage for connecting a vinyl player. There is an ECO mode in R-N602BL. The Pioneer Elite SC-LX704 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the Elite SC-LX704. Only in the Elite SC-LX704 realized a DTS:X surround technology.