An affordable AV receiver is always a good option to consider, so Onkyo TX-SR383 vs Yamaha RX-A4A comparison definitely makes sense.
Considered AV receivers have the same number of channels 7.2. Regarding power, then TX-SR383 has such a W/Ohm ratio - 100/8, 135/6 when RX-A4A has a power of 110/8. The THD is 0.09% for the TX-SR383 but 0.06% for the RX-A4A.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for TX-SR383 and 384 KHz/32-bit for the RX-A4A. Only the RX-A4A supports Bi-amping feature. The Yamaha RX-A4A can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. Only the RX-A4A supports Spotify. HDMI signal transmission in standby mode is implemented in each of the devices. The RX-A4A can scale the input HDMI signal, unlike the TX-SR383. Dolby Vision technology found support only on the RX-A4A.
The Onkyo TX-SR383 has 4/1 HDMI inputs/outputs versus 7/3 HDMI connectors of the Yamaha RX-A4A. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the RX-A4A. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The TX-SR383 supports the protection of digital content of the standard HDCP 2.2, versus HDCP 2.3 in the RX-A4A. The RX-A4A 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 RX-A4A. The setup assistant will help you configure Yamaha RX-A4A.
Only the RX-A4A has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the RX-A4A.