The Marantz SR5012 vs Marantz NR1504 comparison proves that these receivers have many common features.
A significant difference between the receivers in the number of channels, Marantz SR5012 has 7.2 versus 5.1 for Marantz NR1504. Regarding power, then SR5012 has such a W/Ohm ratio - 100/8 when NR1504 has a power of 50/8, 60/6. The THD is the same and is 0.08%.
Competitors' digital to analog converter (DAC) is identical to 192 KHz/24-bit. Only the SR5012 supports Bi-amping feature. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing. 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 NR1504 can receive a content from Pandora, SiriusXM.
Only the Marantz SR5012 has support for High dynamic range (HDR). HDMI signal transmission in standby mode is implemented in each of the devices. The SR5012 can scale the input HDMI signal, unlike the NR1504. Dolby Vision technology found support only on the SR5012.
The Marantz SR5012 has 8/2 HDMI inputs/outputs versus 6/1 HDMI connectors of the Marantz NR1504. The HDMI Audio Return Channel (ARC) feature supports both devices. Unfortunately, HDMI eARC is not available on monitored devices. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. Both models support the standard HDCP 2.2. Receivers do not have a built-in phono stage for connecting a vinyl player. An ECO mode is only available for the SR5012. Both SR5012 and NR1504 can be configured using the Setup assistant.
Only the SR5012 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SR5012.