An affordable AV receiver is always a good option to consider, so Yamaha RX-A6A vs Yamaha RX-A4A comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Yamaha RX-A6A has 9.2 versus 7.2 for Yamaha RX-A4A. Regarding power, then RX-A6A has such a W/Ohm ratio - 150/8 when RX-A4A has a power of 110/8. The THD is the same and is 0.06%.
Competitors' digital to analog converter (DAC) is identical to 384 KHz/32-bit. Both the RX-A6A and the RX-A4A support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
WI-FI modules have the same characteristics: 2.4/5GHz. Rivals from our review have Bluetooth support. The Apple Music service is implemented on considered devices: AirPlay, AirPlay 2. Spotify can be used on each receiver. Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud - all of these streaming services have found application in each of the models.
Both AV receivers support HDR10+ technology (High dynamic range). Compared AV receivers retain the quality of 4K/120Hz 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.
Each receiver has 7/3 HDMI inputs/outputs. 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 2.3. These compared receivers have a built-in phono stage for connecting a vinyl player.
The RX-A6A supports 3 Multi-room zones, versus 2 for the RX-A4A. Supported voice control technologies are identical - Amazon Alexa, Google Assistant, Siri, Josh.AI. It is also worth noting that the ECO mode is presented in each of the receivers. Both RX-A6A and RX-A4A 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.