Along with the growing popularity of custom home theater builds, the comparison of Onkyo TX-RZ820 and Onkyo TX-SR383 takes place. According to the results of our review, Onkyo TX-RZ820 received 7.7 points out of 10 possible, and Onkyo TX-SR383 was rated 4.8 points. The release date of TX-RZ820 is 2017, and TX-SR383 is 2018. Based on the data on the characteristics and features of both models, we can conclude that TX-RZ820 has better performance than TX-SR383.
For the built-in amplifier, the devices received different marks - 9 and 7, respectively, on a 10-point scale.
The number of channels is equal to the number of possible connected speakers. Both receivers can handle the 7.2-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-RZ820 this value is 160/8 W/Ohm, and for the TX-SR383 it is 100/8 W/Ohm.
|Stereo power (RMS), W/Ohm||160/8||100/8, 135/6|
|Output impedance, Ohm||8||8, 6|
|THD in stereo, %||0.08||0.09|
After reviewing the audio features of each model, we can rate the TX-RZ820 8 out of 10, and the TX-SR383 - 6.
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 only on the TX-RZ820.
Pure Direct mode feeds sound directly to the amplifier and bypasses any DSP processing. Only Onkyo TX-RZ820 has Pure Direct mode.
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)||AK4458 384 KHz/32-bit||192 KHz/24-bit|
|Pure direct (straight)||✔||✖|
|Auto speaker calibration||AccuEQ||Audyssey MultEQ|
|Speaker A/B switching||✖||✖|
|Other audio features||has not||Advanced Music Optimizer|
The connectivity of competitors in our comparison is markedly different, Onkyo TX-RZ820 scored 8, and Onkyo TX-SR383 scored 6 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||✖|
|Other streaming services||Deezer, TIDAL||has not|
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, Onkyo TX-RZ820 got 8 points, but Onkyo TX-SR383 received 6 points.
Onkyo TX-RZ820 is equipped with 7/2 HDMI inputs and outputs, and Onkyo TX-SR383 has 4/1 HDMI inputs and outputs.
Connecting a vinyl player or phonograph is possible using a Phono input which is represented by mini-jack or RCA connectors. Only the TX-RZ820 has a Phono interface.
|HDMI ARC (Audio Return Channel)||✔||✔|
|HDMI eARC (Enhanced Audio Return Channel)||✖||✖|
|Digital content protection (HDCP)||HDCP 2.2||HDCP 2.2|
|Subwoofer output (LFE)||2||2|
|Headphone output||1 x 6.3||1 x 6.3|
|Optical digital input||2||1|
|Coaxial digital input||1||1|
|Phono (MM) input||✔||✖|
|Front panel connectors||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 TX-RZ820 were rated 7 out of 10 against the 6 for the TX-SR383.
|HDR (High Dynamic Range)||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, BT.2020, HLG|
In terms of evaluating additional features, the TX-RZ820 got 8 points, but the TX-SR383 has 4.
Only the Onkyo TX-RZ820 has the ECO mode.
|App control||iPhone, iPad, iPod, Android||iPhone, iPod, Android|
|Tuner||AM, FM||AM, FM|
|Auto power off||✔||✖|
|Graphical user interface (GUI)||✔||✖|
|Firmware update||network, USB||USB|
|Other additional features||IP Control||has not|
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||speaker|
|Zone HDMI output||✔||✖|
|Multi-room control||FlareConnect||has not|
|Remote control input/output (IR)||1/0||0/0|
|DC trigger output (12V)||1||0|
Onkyo TX-RZ820 got 7 points for the multichannel surround sound and Onkyo TX-SR383 got 5.
Dolby Atmos' particularity is that this is the object-oriented sound format, that is, each audio signal object is independently sounded and connected to its spatial position. Onkyo TX-RZ820 can create 3D sound due to the Dolby Atmos support.
DTS:X is an algorithm used by the processor to create sound scenes, where sounds connected directly to objects rather than channels, and to determine the optimum sound output distribution in space. Surround sound with DTS:X is available only on the TX-RZ820.
|Dolby (other)||Dolby Digital Plus||Dolby Pro Logic|
|DTS HD Master||✔||✔|
|DTS (other)||has not||has not|