The present review is aimed to compare two AV receivers - Denon AVR-X3600H 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, Denon AVR-X3600H has 9.2 versus 5.2 for Denon AVR-S640H. Regarding power, then AVR-X3600H has such a W/Ohm ratio - 105/8, 135/6 when AVR-S640H has a power of 75/8, 100/6. The THD is the same and is 0.08%.
Competitors' digital to analog converter (DAC) is identical to 192 KHz/32-bit. Only the AVR-X3600H supports Bi-amping feature. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Both models have the ability to connect to the Internet via WI-FI. 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. Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud - all of these streaming services have found application in each of the models. 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 AVR-X3600H can scale the input HDMI signal, unlike the AVR-S640H. The HDR standard - Dolby Vision is supported by these receivers.
The Denon AVR-X3600H has 8/3 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 AVR-X3600H. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The AVR-X3600H 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. Supported voice control technologies are identical - Amazon Alexa, Google Assistant, Siri, Josh.AI. It is also worth noting that the ECO mode is presented in each of the receivers. Both AVR-X3600H and AVR-S640H can be configured using the Setup assistant.
Only the AVR-X3600H has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVR-X3600H.