What is better - Yamaha RX-V671 vs Denon HEOS AVR?
The number of channels for receivers is different - 7.1 versus 5.1, respectively, for devices. In terms of power, there are differences, the RX-V671 has such a ratio W/Ohm - 90/8, 150/4, while the HEOS AVR has a power of 50/8, 65/6. The value of total harmonic distortion is also different, and for the RX-V671 it is 0.09%, but for the HEOS AVR it is 0.05%. The Bi-amping function is implemented only in the Yamaha RX-V671. Both Yamaha RX-V671 and Denon HEOS AVR can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet connection via WIFI is only possible with HEOS AVR. Each of the receivers has a Bluetooth connector. Support for Apple Music Services not implemented. The HEOS AVR has access to the Spotify service. The number of available streaming services varies for receivers, the Yamaha RX-V671 works with Napster, but the Denon HEOS AVR works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud.
Oddly enough, the support for the HDR function is not implemented in these units. 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 RX-V671 and the HEOS AVR. Video scaling is only possible with the RX-V671. Review participants do not have the Dolby Vision feature.
The number of HDMI inputs/outputs varies depending on the receiver, the RX-V671 has 6/1, and the HEOS AVR has 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the RX-V671 and the HEOS AVR. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. RX-V671 and HEOS AVR support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Yamaha RX-V671. There is an ECO mode in neither AV receiver. None of these units can be properly configured using the setup assistant.
Generally no support for a Dolby Atmos multichannel audio format. A DTS:X surround technology is not supported by devices from our comparison.