An affordable AV receiver is always a good option to consider, so Onkyo TX-SR353 vs Denon AVR-X1400H comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Onkyo TX-SR353 has 5.1 versus 7.2 for Denon AVR-X1400H. Regarding power, then TX-SR353 has such a W/Ohm ratio - 140/6 when AVR-X1400H has a power of 80/8, 120/6. The THD is the same and is 0.08%.
Competitors' digital to analog converter (DAC) is identical to 192 KHz/24-bit. Only the AVR-X1400H supports Bi-amping feature. The Denon AVR-X1400H can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Only the Denon AVR-X1400H can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the AVR-X1400H supports Spotify.
Only the Denon AVR-X1400H has support for High dynamic range (HDR). HDMI signal transmission in standby mode is implemented in each of the devices. Both competitors are not able to scale the HDMI signal. Dolby Vision technology found support only on the AVR-X1400H.
The Onkyo TX-SR353 has 4/1 HDMI inputs/outputs versus 6/1 HDMI connectors of the Denon AVR-X1400H. 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 AVR-X1400H. The setup assistant will help you configure Denon AVR-X1400H.
Only the AVR-X1400H has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVR-X1400H.