Marantz NR1510 vs Marantz SR6010 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Marantz NR1510 has 5.2 versus 7.2 for Marantz SR6010. Regarding power, then NR1510 has such a W/Ohm ratio - 50/8, 60/6 when SR6010 has a power of 110/8, 150/6. The THD is 0.08% for the NR1510 but 0.05% for the SR6010.
Competitors' digital to analog converter (DAC) is identical to 192 KHz/32-bit. Only the SR6010 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 NR1510 has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The NR1510 can work with the audio stream from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, and the SR6010 can receive a content from Pandora, SiriusXM. Compared AV receivers retain the quality of 4K/60Hz signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. The SR6010 can scale the input HDMI signal, unlike the NR1510. Dolby Vision technology found support only on the NR1510.
The Marantz NR1510 has 8/1 HDMI inputs/outputs versus 8/2 HDMI connectors of the Marantz SR6010. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the NR1510. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The NR1510 supports the protection of digital content of the standard HDCP 2.3, versus HDCP 2.2 in the SR6010. These compared receivers have a built-in phono stage for connecting a vinyl player. It is also worth noting that the ECO mode is presented in each of the receivers. Both NR1510 and SR6010 can be configured using the Setup assistant.
Only the SR6010 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SR6010.