An affordable AV receiver is always a good option to consider, so Onkyo TX-RZ620 vs Denon AVR-X3200W comparison definitely makes sense.
Considered AV receivers have the same number of channels 7.2. Regarding power, then TX-RZ620 has such a W/Ohm ratio - 100/8 when AVR-X3200W has a power of 105/8, 135/6. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, 384 KHz/32-bit for TX-RZ620 and 192 KHz/24-bit for the AVR-X3200W. Both the TX-RZ620 and the AVR-X3200W 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. The Apple Music service is implemented on considered devices: AirPlay. Spotify can be used on each receiver. The TX-RZ620 can work with the audio stream from Deezer, TIDAL, Pandora, TuneIn Radio, and the AVR-X3200W 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 AVR-X3200W can scale the input HDMI signal, unlike the TX-RZ620. The HDR standard - Dolby Vision is supported by these receivers.
The Onkyo TX-RZ620 has 7/2 HDMI inputs/outputs versus 8/2 HDMI connectors of the Denon AVR-X3200W. 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. The TX-RZ620 has a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. A voice control is not available. An ECO mode is only available for the AVR-X3200W. Both TX-RZ620 and AVR-X3200W 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.