The Sony STR-ZA2100ES vs Marantz SR6012 comparison proves that these receivers have many common features.
A significant difference between the receivers in the number of channels, Sony STR-ZA2100ES has 7.2 versus 9.2 for Marantz SR6012. Regarding power, then STR-ZA2100ES has such a W/Ohm ratio - 75/8, 95/6 when SR6012 has a power of 110/8, 150/6. The THD is 0.09% for the STR-ZA2100ES but 0.08% for the SR6012. Both the STR-ZA2100ES and the SR6012 support Bi-amping. 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. Only the SR6012 supports Spotify. 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. Both rivals can scale the resolution of the incoming HDMI signal. The HDR standard - Dolby Vision is supported by these receivers.
The Sony STR-ZA2100ES has 6/2 HDMI inputs/outputs versus 8/3 HDMI connectors of the Marantz SR6012. The HDMI Audio Return Channel (ARC) feature supports both devices. HDMI eARC is available in each model. 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. The SR6012 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 SR6012. Both STR-ZA2100ES and SR6012 can be configured using the Setup assistant.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.