It makes sense comparing Denon AVR-X1500H 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-X1500H has 7.2 versus 2.0 for Integra DTM-6. Regarding power, then AVR-X1500H has such a W/Ohm ratio - 80/8, 120/6 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, 192 KHz/32-bit for AVR-X1500H and AK4438 384 KHz/32-bit for the DTM-6. Only the AVR-X1500H supports Bi-amping feature. The Denon AVR-X1500H can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. The Denon AVR-X1500H has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The AVR-X1500H can work with the audio stream from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, and the DTM-6 can receive a content from Deezer, TIDAL, Pandora, TuneIn Radio. Only the AVR-X1500H 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-X1500H. Only the AVR-X1500H supports HDMI Audio Return Channel (ARC). Unfortunately, HDMI eARC is not available on monitored devices. Of the two receivers in our comparison, HDMI CEC is present in only the AVR-X1500H. These compared receivers have a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. The AVR-X1500H 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-X1500H. The setup assistant will help you configure Denon AVR-X1500H.
Only the AVR-X1500H has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVR-X1500H.