The present review is aimed to compare two AV receivers - Yamaha AVENTAGE RX-A2080 vs Denon AVR-S640H that are meant to satisfy the needs of cinema and music lovers.
A significant difference between the receivers in the number of channels, Yamaha AVENTAGE RX-A2080 has 9.2 versus 5.2 for Denon AVR-S640H. Regarding power, then AVENTAGE RX-A2080 has such a W/Ohm ratio - 140/8, 220/4 when AVR-S640H has a power of 75/8, 100/6. The THD is 0.06% for the AVENTAGE RX-A2080 but 0.08% for the AVR-S640H.
Characteristics of digital to analog converter (DAC) are different, ESS SABRE ( ES9007S) 384 KHz/32-bit for AVENTAGE RX-A2080 and 192 KHz/32-bit for the AVR-S640H. Only the AVENTAGE RX-A2080 supports Bi-amping feature. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. The Apple Music service is implemented on considered devices: AirPlay, AirPlay 2. Spotify can be used on each receiver. The AVENTAGE RX-A2080 can work with the audio stream from Deezer, TIDAL, Pandora, Sirius XM, Napster, Qobuz, and the AVR-S640H can receive a content from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud. Compared AV receivers retain the quality of 4K/60Hz signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. The AVENTAGE RX-A2080 can scale the input HDMI signal, unlike the AVR-S640H. The HDR standard - Dolby Vision is supported by these receivers.
The Yamaha AVENTAGE RX-A2080 has 7/3 HDMI inputs/outputs versus 5/1 HDMI connectors of the Denon AVR-S640H. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the AVENTAGE RX-A2080. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The AVENTAGE RX-A2080 supports the protection of digital content of the standard HDCP 2.3, versus HDCP 2.2 in the AVR-S640H. These compared receivers have a built-in phono stage for connecting a vinyl player. The AVENTAGE RX-A2080 supports voice control via Amazon Alexa, Google Assistant, and the AVR-S640H - Amazon Alexa, Google Assistant, Siri, Josh.AI. It is also worth noting that the ECO mode is presented in each of the receivers. Both AVENTAGE RX-A2080 and AVR-S640H can be configured using the Setup assistant.
Only the AVENTAGE RX-A2080 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVENTAGE RX-A2080.