It makes sense comparing Denon AVRX4400H 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 AVRX4400H has 9.2 versus 2.0 for Integra DTM-6. Regarding power, then AVRX4400H has such a W/Ohm ratio - 125/8, 165/6 when DTM-6 has a power of 80/8. The THD is 0.05% for the AVRX4400H but 0.08% for the DTM-6.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for AVRX4400H and AK4438 384 KHz/32-bit for the DTM-6. Only the AVRX4400H supports Bi-amping feature. The Denon AVRX4400H can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. The Denon AVRX4400H has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The AVRX4400H can work with the audio stream from Deezer, TIDAL, Pandora,iHeart Radio, Sirius XM, Sound Cloud, Napster, and the DTM-6 can receive a content from Deezer, TIDAL, Pandora, TuneIn Radio.
Only the Denon AVRX4400H has support for High dynamic range (HDR). Only the AVRX4400H provides HDMI signal transmission in standby mode. The AVRX4400H can scale the input HDMI signal, unlike the DTM-6. Dolby Vision technology found support only on the AVRX4400H. Only the AVRX4400H supports HDMI Audio Return Channel (ARC). The HDMI eARC is available only on the AVRX4400H. Of the two receivers in our comparison, HDMI CEC is present in only the AVRX4400H. These compared receivers have a built-in phono stage for connecting a vinyl player.
The AVRX4400H supports 3 Multi-room zones, versus 2 for the DTM-6. The AVRX4400H 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 AVRX4400H. The setup assistant will help you configure Denon AVRX4400H.
Only the AVRX4400H has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVRX4400H.