It makes sense comparing Yamaha RX-V581 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, Yamaha RX-V581 has 7.2 versus 2.0 for Integra DTM-6. Regarding power, then RX-V581 has such a W/Ohm ratio - 115/6 when DTM-6 has a power of 80/8. The THD is 0.09% for the RX-V581 but 0.08% for the DTM-6.
Characteristics of digital to analog converter (DAC) are different, Burr-Brown 192 KHz/24-bit for RX-V581 and AK4438 384 KHz/32-bit for the DTM-6. Only the RX-V581 supports Bi-amping feature. The Yamaha RX-V581 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. The Apple Music service is implemented on considered devices: AirPlay. Spotify can be used on each receiver. The RX-V581 can work with the audio stream from Pandora, JUKE, and the DTM-6 can receive a content from Deezer, TIDAL, Pandora, TuneIn Radio.
Only the Yamaha RX-V581 has support for High dynamic range (HDR). Only the RX-V581 provides HDMI signal transmission in standby mode. Both competitors are not able to scale the HDMI signal. The HDR standard - Dolby Vision is not supported by these receivers. Only the RX-V581 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 RX-V581. 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. An ECO mode is only available for the RX-V581. The setup assistant will help you configure Yamaha RX-V581.
Only the RX-V581 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the RX-V581.