It makes sense comparing Marantz SR5012 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, Marantz SR5012 has 7.2 versus 2.0 for Integra DTM-6. Regarding power, then SR5012 has such a W/Ohm ratio - 100/8 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/24-bit for SR5012 and AK4438 384 KHz/32-bit for the DTM-6. Only the SR5012 supports Bi-amping feature. The Marantz SR5012 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
WI-FI modules have the same characteristics: 2.4/5GHz. Rivals from our review have Bluetooth support. The Marantz SR5012 has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The SR5012 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 Marantz SR5012 has support for High dynamic range (HDR). Only the SR5012 provides HDMI signal transmission in standby mode. The SR5012 can scale the input HDMI signal, unlike the DTM-6. Dolby Vision technology found support only on the SR5012. Only the SR5012 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 SR5012. The DTM-6 has a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. The SR5012 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 SR5012. The setup assistant will help you configure Marantz SR5012.
Only the SR5012 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SR5012.