Review of Onkyo TX-SR373 versus Sony STRZA1100ES will reveal the best features offered by the devices. According to the results of our review, Onkyo TX-SR373 received 4.2 points out of 10 possible, and Sony STRZA1100ES was rated 6.6 points. Both AV receivers were introduced in 2017. STRZA1100ES is better suited for home theater use than the TX-SR373. Its sound profile is better balanced.
For the built-in amplifier, the devices received different marks - 6 and 7, respectively, on a 10-point scale.
The number of channels is equal to the number of possible connected speakers. The Onkyo TX-SR373 supports 5.1-channels sound, but Sony STRZA1100ES supports a 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-SR373 this value is 135/6 W/Ohm, and for the STRZA1100ES it is 90/6 W/Ohm.
|Stereo power (RMS), W/Ohm||135/6||70/8, 90/6|
|Output impedance, Ohm||6||8, 6|
|THD in stereo, %||0.06||0.09|
After reviewing the audio features of each model, we can rate the TX-SR373 5 out of 10, and the STRZA1100ES - 7.
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 STRZA1100ES.
Pure Direct mode feeds sound directly to the amplifier and bypasses any DSP processing. Only Sony STRZA1100ES 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)||192 KHz/24-bit||N/A|
|Pure direct (straight)||✖||✔|
|Auto speaker calibration||AccuEQ||DCAC EX|
|Speaker A/B switching||✖||✖|
|Other audio features||has not||Sound Optimize|
The connectivity of competitors in our comparison is equal and was rated 5 out of 10.
Bluetooth connection is now one of the main communication protocols for the receiver's control or even music broadcasting. Of the two receivers reviewed, only Onkyo TX-SR373 has a built-in Bluetooth.
Wired internet connection via RJ45 allows receiver faster connection than wireless or even use NAS storages. Wired connection via RJ45 is possible in the STRZA1100ES only.
|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)||✖||✖|
|Other streaming services||has not||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, both receivers got 6 points on our 10-point scale.
Onkyo TX-SR373 is equipped with 4/1 HDMI inputs and outputs, and Sony STRZA1100ES has 5/2 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 on Sony STRZA1100ES.
|HDMI ARC (Audio Return Channel)||✔||✔|
|HDMI eARC (Enhanced Audio Return Channel)||✖||✔|
|Digital content protection (HDCP)||HDCP 2.2||HDCP 2.2|
|Subwoofer output (LFE)||1||2|
|Headphone output||1 x 6.3||1 x 6.3|
|Optical digital input||1||2|
|Coaxial digital input||1||1|
|Phono (MM) input||✖||✖|
|Front panel connectors||USB, phones, setup mic||USB, 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-SR373 were rated 5 out of 10 against the 7 for the STRZA1100ES.
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 Sony STRZA1100ES.
|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||DeepColor, x.v.Color||HLG|
In terms of evaluating additional features, the TX-SR373 got 5 points, but the STRZA1100ES has 7.
|App control||iPhone, iPod, Android||iPhone, iPad, iPod, Android|
|Tuner||AM, FM||AM, FM|
|Auto power off||✔||✖|
|Graphical user interface (GUI)||✖||✔|
|Firmware update||USB||network, USB|
|Other additional features||has not||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.
|Multi-room zones||has not||2|
|Zone audio output||has not||speaker, preout|
|Zone HDMI output||has not||✔|
|Multi-room control||has not||has not|
|Remote control input/output (IR)||0/0||1/2|
|DC trigger output (12V)||0||1|
Onkyo TX-SR373 got 5 points for the multichannel surround sound and Sony STRZA1100ES got 7.
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. Sony STRZA1100ES 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 on the STRZA1100ES.
IMAX Enhanced is a licensing and certification program under which home theater devices deliver crisp 4K HDR pictures and powerful sound as it was designed by the IMAX engineers. The STRZA1100ES licensed by IMAX.
|Dolby (other)||Dolby Digital Plus||Dolby Digital Plus|
|DTS HD Master||✖||✔|
|DTS (other)||DTS 96/24, DTS-HD||DTS-ES, DTS 96/24, DTS-HD|