The Denon AVR-S750H versus Onkyo TX-RZ830 comparison makes clear all pros and cons of AV receivers. According to the results of our review, Denon AVR-S750H received 7 points out of 10 possible, and Onkyo TX-RZ830 was rated 8 points. The release date of AVR-S750H is 2019, and TX-RZ830 is 2018. Identified advantages have shown that TX-RZ830 is better over AVR-S750H mainly as a home theater processor.
For the built-in amplifier, the devices received different marks - 7 and 8, 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 Onkyo TX-RZ830 supports a 9.2-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 TX-RZ830 this value is 180/6 W/Ohm, and for the AVR-S750H it is 110/6 W/Ohm.
|Stereo power (RMS), W/Ohm||75/8, 110/6||180/6|
|Output impedance, Ohm||8, 6||6|
|THD in stereo, %||0.08||0.08|
After reviewing the audio features of each model, we can rate the AVR-S750H 6 out of 10, and the TX-RZ830 - 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 TX-RZ830.
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||AK4458 384 KHz/32-bit|
|Pure direct (straight)||✔||✔|
|Auto speaker calibration||Audyssey MultEQ||AccuEQ|
|Speaker A/B switching||✖||✖|
|Other audio features||Audyssey Dynamic Volume, Audyssey Dynamic EQ, Compressed Audio Restorer, Hi-Res audio||Advanced Music Optimizer, Theater-Dimensional, Hi-Res audio|
The connectivity of competitors in our comparison is markedly different, Denon AVR-S750H scored 7, and Onkyo TX-RZ830 scored 8 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|
|Other streaming services||Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, Mood Mix||Deezer, TIDAL, TuneIn Radio|
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 Onkyo TX-RZ830 received 8 points.
Denon AVR-S750H is equipped with 6/1 HDMI inputs and outputs, and Onkyo TX-RZ830 has 7/2 HDMI inputs and outputs.
HDMI eARC is the next step in the development of audio return channel technology, which works in conjunction with HDMI 2.1. Using eARC provides the highest sound quality for home audio systems. HDMI eARC is available only on Denon AVR-S750H.
The HDCP encryption protocol is now mandatory for most media devices. This security technology encrypts digital signals from one product to another. HDCP content-encryption protocol is present on Denon AVR-S750H in the HDCP 2.3 version, and Onkyo TX-RZ830 has the HDCP 2.2 version.
|HDMI ARC (Audio Return Channel)||✔||✔|
|HDMI eARC (Enhanced Audio Return Channel)||✔||✖|
|Digital content protection (HDCP)||HDCP 2.3||HDCP 2.2|
|Subwoofer output (LFE)||2||2|
|Headphone output||1 x 6.3||1 x 6.3|
|Optical digital input||2||2|
|Coaxial digital input||1||1|
|Phono (MM) input||✔||✔|
|Front panel connectors||USB, HDMI, phones, setup mic||HDMI, 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 7 for the TX-RZ830.
|HDR (High Dynamic Range)||HDR10||HDR10|
|4K signal pass-through||4K/60Hz||4K/60Hz|
|8K signal pass-through||✖||✖|
|HDMI signal pass-through||✔||✔|
|3D signal pass-through||✔||✔|
|HDMI pass-through in standby mode||✔||✔|
|Analog to HDMI scaling||✖||✖|
|HDMI to HDMI scaling||✖||✖|
|Other video features||HLG, BT.2020||DeepColor, x.v.Color, HLG, BT.2020|
In terms of evaluating additional features, the AVR-S750H got 10 points, but the TX-RZ830 has 8.
Only the Denon AVR-S750H has the ECO mode.
|Voice control||Amazon Alexa, Google Assistant, Siri, Josh.AI||Google Assistant|
|App control||iPhone, iPad, iPod, Android, Amazon Kindle||iPhone, iPad, iPod, Android|
|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||IP 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||speaker, preout|
|Zone HDMI output||✖||✔|
|Multi-room control||HEOS App||Onkyo Controller app, FlareConnect|
|Remote control input/output (IR)||0/0||1/0|
|DC trigger output (12V)||0||1|
For the ability to create multichannel surround sound, each of the receivers received 7 points out of 10.
|Dolby (other)||Dolby Digital Plus, Dolby Atmos Height Virtualization||Dolby Digital Plus|
|DTS HD Master||✔||✔|
|DTS (other)||DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS||DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS|