An affordable AV receiver is always a good option to consider, so Onkyo TX-NR555 vs Marantz SR6013 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Onkyo TX-NR555 has 7.2 versus 9.2 for Marantz SR6013. Regarding power, then TX-NR555 has such a W/Ohm ratio - 130/6 when SR6013 has a power of 110/8, 150/6. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, Hi-Grade 384 KHz/32-bit for TX-NR555 and AK4458 384 KHz/32-bit for the SR6013. Both the TX-NR555 and the SR6013 support Bi-amping. Each of the AV receivers 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 Onkyo TX-NR555 has support for AirPlay, and its competitor in our comparison - AirPlay, AirPlay 2. Spotify can be used on each receiver. The TX-NR555 can work with the audio stream from Deezer, TIDAL, Pandora, and the SR6013 can receive a content from Deezer, TIDAL, Pandora, TuneIn Radio.
These units support HDR technology. 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 SR6013 can scale the input HDMI signal, unlike the TX-NR555. Dolby Vision technology found support only on the SR6013.
The Onkyo TX-NR555 has 6/1 HDMI inputs/outputs versus 8/3 HDMI connectors of the Marantz SR6013. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the SR6013. 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. These compared receivers have a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. It is also worth noting that the ECO mode is presented in each of the receivers. The setup assistant will help you configure Marantz SR6013.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.