Denon HEOS AVR vs Yamaha RX-V677 review

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Denon HEOS AVR vs Yamaha RX-V677 – that is a question.

Amplifier

The number of channels for receivers is different - 5.1 versus 7.2, respectively, for devices. In terms of power, there are differences, the HEOS AVR has such a ratio W/Ohm - 50/8, 65/6, while the RX-V677 has a power of 90/8, 150/4. The value of total harmonic distortion is also different, and for the HEOS AVR it is 0.05%, but for the RX-V677 it is 0.09%. The Bi-amping function is implemented only in the Yamaha RX-V677. Both Denon HEOS AVR and Yamaha RX-V677 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.

Connectivity

Wireless Internet access via WIFI is possible on both units. Each of the receivers has a Bluetooth connector. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Denon HEOS AVR works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, but the Yamaha RX-V677 works with Pandora, Napster, JUKE.

Video features

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 HEOS AVR and the RX-V677. Video scaling is only possible with the RX-V677. Review participants do not have the Dolby Vision feature.

Extensive connections

The number of HDMI inputs/outputs varies depending on the receiver, the HEOS AVR has 4/1, and the RX-V677 has 6/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the HEOS AVR and the RX-V677. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. HEOS AVR and RX-V677 support the standard HDCP 2.2. Unlike most receivers, our models do not have a built-in phono stage for connecting a vinyl player. There is an ECO mode in RX-V677. The Yamaha RX-V677 can be properly configured using the setup assistant.

Multichannel surround

Generally no support for a Dolby Atmos multichannel audio format. A DTS:X surround technology is not supported by devices from our comparison.