Having had an opportunity to test Denon AVR-X6500H vs Yamaha RX-A880, 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 - 11.2 versus 7.2, respectively, for devices. In terms of power, there are differences, the AVR-X6500H has such a ratio W/Ohm - 140/8, 175/6, while the RX-A880 has a power of 100/8, 160/4. The value of total harmonic distortion is also different, and for the AVR-X6500H it is 0.05%, but for the RX-A880 it is 0.06%.
The manufacturer installed different DACs, the AVR-X6500H received the model 192 KHz/32-bit, but the RX-A880 is equipped with Burr-Brown 384 KHz/32-bit. Each of the compared opponents supports Bi-amping. Both Denon AVR-X6500H and Yamaha RX-A880 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. Both devices can work with such Apple Music services: AirPlay, AirPlay 2. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Denon AVR-X6500H works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, Mood Mix, but the Yamaha RX-A880 works with Deezer, TIDAL, Pandora, Napster, SiriusXM, Qobuz.
The HDR10 function is present in each of the rivals. 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 AVR-X6500H and the RX-A880. Each of the devices can increase the resolution of the incoming video signal. Each of the participants of the comparison has a Dolby Vision.
The number of HDMI inputs/outputs varies depending on the receiver, the AVR-X6500H has 8/3, and the RX-A880 has 7/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is supported by the AVR-X6500H and the RX-A880. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. AVR-X6500H and RX-A880 support the standard HDCP 2.2. Like most receivers, our models have a built-in phono stage for connecting a vinyl player.
Unlike the AVR-X6500H where 3 Multi zones is provided, the RX-A880 works with 2 Multi zones. For voice control in the AVR-X6500H is used Amazon Alexa, Google Assistant, Siri, Josh.AI, but in the RX-A880 is used Amazon Alexa, Google Assistant. There is an ECO mode in either AV receiver. The Denon AVR-X6500H and the Yamaha RX-A880 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available both models. A DTS:X surround technology is supported by devices from our comparison.
The Denon AVR-X6500H is better receiver in this comparison. Check Denon AVR-X6500H price