An affordable AV receiver is always a good option to consider, so Denon AVR-S650H vs Onkyo TX-SR393 comparison definitely makes sense.
Considered AV receivers have the same number of channels 5.2. Regarding power, then AVR-S650H has such a W/Ohm ratio - 75/8, 100/6 when TX-SR393 has a power of 80/8, 155/6. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, AKM 192 KHz/32-bit for AVR-S650H and AKM 384 KHz/32-bit for the TX-SR393. None of the models support Bi-amping. The Denon AVR-S650H can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Only the Denon AVR-S650H can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the AVR-S650H supports Spotify.
Both AV receivers support HDR10 technology (High dynamic range). 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 TX-SR393 can scale the input HDMI signal, unlike the AVR-S650H. The HDR standard - Dolby Vision is supported by these receivers.
The Denon AVR-S650H has 5/1 HDMI inputs/outputs versus 4/1 HDMI connectors of the Onkyo TX-SR393. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the AVR-S650H. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The AVR-S650H supports the protection of digital content of the standard HDCP 2.3, versus HDCP 2.2 in the TX-SR393. The AVR-S650H has a built-in phono stage for connecting a vinyl player. An ECO mode is only available for the AVR-S650H. The setup assistant will help you configure Denon AVR-S650H.
Only the TX-SR393 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the TX-SR393.