It makes sense comparing Denon AVR-S650H vs Integra DTM-6 because they both are able to give some premium features.
A significant difference between the receivers in the number of channels, Denon AVR-S650H has 5.2 versus 2.0 for Integra DTM-6. Regarding power, then AVR-S650H has such a W/Ohm ratio - 75/8, 100/6 when DTM-6 has a power of 80/8. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, AKM 192 KHz/32-bit for AVR-S650H and AK4438 384 KHz/32-bit for the DTM-6. None of the models support Bi-amping. The Denon AVR-S650H can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. The Denon AVR-S650H has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The AVR-S650H can work with the audio stream from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, Mood Mix, and the DTM-6 can receive a content from Deezer, TIDAL, Pandora, TuneIn Radio. Only the AVR-S650H provides HDMI signal transmission in standby mode. Both competitors are not able to scale the HDMI signal. Dolby Vision technology found support only on the AVR-S650H. Only the AVR-S650H supports HDMI Audio Return Channel (ARC). The HDMI eARC is available only on the AVR-S650H. Of the two receivers in our comparison, HDMI CEC is present in only the AVR-S650H. These compared receivers have a built-in phono stage for connecting a vinyl player. The AVR-S650H supports voice control via Amazon Alexa, Google Assistant, Siri, Josh.AI, and the DTM-6 - Google Assistant. An ECO mode is only available for the AVR-S650H. The setup assistant will help you configure Denon AVR-S650H.
None of the rivals equipped with Dolby Atmos multichannel audio decoder. The receivers do not support the surround sound technology DTS:X.