An overview of Denon AVR-S750H and Yamaha RX-A8A will help us understand the many features that the devices are equipped with. According to the results of our review, Denon AVR-S750H received 7 points out of 10 possible, and Yamaha RX-A8A was rated 9.4 points. The release date of AVR-S750H is 2019, and RX-A8A is 2021. And as a result of the review, it becomes clear that AVR-S750H is inferior in audio processing features to RX-A8A.
For the built-in amplifier, the devices received different marks - 7 and 10, respectively, on a 10-point scale.
The number of channels is equal to the number of possible connected speakers. The Denon AVR-S750H supports 7.2-channels sound, but Yamaha RX-A8A supports a 11.2-channels configuration.
RMS stands for the actual power of the receiver. The higher this value, the louder the sound can be produced. The differences between the models in terms of RMS power are significant - for the RX-A8A this value is 150/8 W/Ohm, and for the AVR-S750H it is 75/8 W/Ohm.
|Stereo power (RMS), W/Ohm||75/8, 110/6||150/8|
|Output impedance, Ohm||8, 6||8|
|THD in stereo, %||0.08||0.06|
After reviewing the audio features of each model, we can rate the AVR-S750H 6 out of 10, and the RX-A8A - 9.
Bi-amping is the amplification of one speaker with two amplifiers. This amplification method has a positive effect on sound quality. Bi-amping is possible on the RX-A8A.
Most receivers now come with a microphone included. It is with the help of this microphone that the auto-calibration system functions, which adjusts the sound of the receiver to the room.
|Digital to analog converter (DAC)||AKM 192 KHz/32-bit||384 KHz/32-bit|
|Pure direct (straight)||✔||✔|
|Auto speaker calibration||Audyssey MultEQ||YPAO|
|Speaker A/B switching||✖||✖|
|Other audio features||Audyssey Dynamic Volume, Audyssey Dynamic EQ, Compressed Audio Restorer, Hi-Res audio||CINEMA DSP 3D, Compressed Music Enhancer, Virtual CINEMA FRONT|
The connectivity of competitors in our comparison is markedly different, Denon AVR-S750H scored 7, and Yamaha RX-A8A scored 9 out of 10.
Bluetooth connection is now one of the main communication protocols for the receiver's control or even music broadcasting.
|USB||1 (USB 2.0)||1 (USB 2.0)|
Now music streaming services are gaining more and more popularity. They allow users to listen to millions of songs by subscription.
|Apple Music (AirPlay)||AirPlay, AirPlay 2||AirPlay, AirPlay 2|
|Other streaming services||Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, Mood Mix||Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud|
The presence of many connectors makes the receiver more versatile. But there are also narrowly targeted models, the number of connectors which are limited to a certain area of use. And when choosing their own receiver, users need to consider exactly your goals for using the receiver. For extensive connection, Denon AVR-S750H got 7 points, but Yamaha RX-A8A received 10 points.
Denon AVR-S750H is equipped with 6/1 HDMI inputs and outputs, and Yamaha RX-A8A has 7/3 HDMI inputs and outputs.
|HDMI ARC (Audio Return Channel)||✔||✔|
|HDMI eARC (Enhanced Audio Return Channel)||✔||✔|
|Digital content protection (HDCP)||HDCP 2.3||HDCP 2.3|
|Subwoofer output (LFE)||2||2|
|Headphone output||1 x 6.3||1 x 6.3|
|Optical digital input||2||3|
|Coaxial digital input||1||2|
|Phono (MM) input||✔||✔|
|Front panel connectors||USB, HDMI, phones, setup mic||USB, phones, setup mic|
|Multi channel preamp output||✖||✔|
The AV receiver is the heart of the home theater. And in this case, support for all current video formats ensures the best user experience, so it is very important to consider this when choosing a device. Video features of the AVR-S750H were rated 6 out of 10 against the 9 for the RX-A8A.
With the 4K pass-through feature, the AV receiver sends "native" 4K signals to a 4K TV from a video source without any processing. The AVR-S750H works with the 4K/60Hz video, and the RX-A8A has the 4K/120Hz.
The AV receiver passes "native" 8K signals from a video source to 8K TV without any encoding, with the 8k pass-through features. The 8K path-through is available on Yamaha RX-A8A.
Most of the AV receivers have a video scaling function, it is the process of reformatting the video signal to a higher resolution without losing the quality of the image. Upscaling the video signal resolution is possible with Yamaha RX-A8A.
|HDR (High Dynamic Range)||HDR10||HDR10+|
|4K signal pass-through||4K/60Hz||4K/120Hz|
|8K signal pass-through||✖||8K/60Hz|
|HDMI signal pass-through||✔||✔|
|3D signal pass-through||✔||✖|
|HDMI pass-through in standby mode||✔||✔|
|Video conversion||✖||analog to HDMI|
|Analog to HDMI scaling||✖||✔|
|HDMI to HDMI scaling||✖||✔|
|Other video features||HLG, BT.2020||x.v.Color, HLG, BT.2020, LipSync|
In terms of evaluating additional features, both receivers received a score of 10 out of 10.
|Voice control||Amazon Alexa, Google Assistant, Siri, Josh.AI||Amazon Alexa, Google Assistant, Siri, Josh.AI|
|App control||iPhone, iPad, iPod, Android, Amazon Kindle||iPhone, iPad, iPod, Android|
|Display||colour OSD||colour OSD|
|Tuner||AM, FM||AM, FM|
|Auto power off||✔||✔|
|Graphical user interface (GUI)||✔||✔|
|Firmware update||network, USB||network, USB|
|Other additional features||IP Control, Web Control||Web Control, App Control|
As the center of a home media system, each multichannel receiver has an additional set of terminals for connecting the second set of speakers to create additional audio space in Zone 2 or even Zone 3 where audio can have the separate source.
|Zone audio output||speaker||preout|
|Zone HDMI output||✖||✔|
|Multi-room control||HEOS App||MusicCast|
|Remote control input/output (IR)||0/0||1/1|
|DC trigger output (12V)||0||2|
Denon AVR-S750H got 7 points for the multichannel surround sound and Yamaha RX-A8A got 8.
Auro 3D gives a bit more versatility than Dolby Atmos or DTS:X and provides a hemispherical sound and enables a receiver to produce 3D sound stages. Yamaha RX-A8A has Auro-3D on its feature list.
|Dolby (other)||Dolby Digital Plus, Dolby Atmos Height Virtualization||Dolby Digital Plus, Dolby Atmos Height Virtualization|
|DTS HD Master||✔||✔|
|DTS (other)||DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS||DTS-ES, DTS-HD|