The Onkyo TX-SR383 vs Pioneer Elite SC-LX904 comparison makes sense because it shows what devices in their segments can offer. According to the results of our review, Onkyo TX-SR383 received 4.8 points out of 10 possible, and Pioneer Elite SC-LX904 was rated 9.2 points. The release date of TX-SR383 is 2018, and Elite SC-LX904 is 2019. Elite SC-LX904 is more suitable as the heart of home theater system than its opponent - TX-SR383.
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 Onkyo TX-SR383 supports 7.2-channels sound, but Pioneer Elite SC-LX904 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 Elite SC-LX904 this value is 140/8 W/Ohm, and for the TX-SR383 it is 100/8 W/Ohm.
|Stereo power (RMS), W/Ohm||100/8, 135/6||140/8|
|Output impedance, Ohm||8, 6||8|
|THD in stereo, %||0.09||0.08|
After reviewing the audio features of each model, we can rate the TX-SR383 6 out of 10, and the Elite SC-LX904 - 10.
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 Elite SC-LX904.
Pure Direct mode feeds sound directly to the amplifier and bypasses any DSP processing. Only Pioneer Elite SC-LX904 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.
Speaker A/B switching allows you to change between the main and sub speaker set. Pioneer Elite SC-LX904 can work with the main and additional set of speakers - and switch between them.
|Digital to analog converter (DAC)||192 KHz/24-bit||ES9026PRO 384 KHz/32-bit|
|Pure direct (straight)||✖||✔|
|Auto speaker calibration||Audyssey MultEQ||MCACC|
|Speaker A/B switching||✖||✔|
|Other audio features||Advanced Music Optimizer||Advanced Sound Retriever, Hi-Res audio|
The connectivity of competitors in our comparison is markedly different, Onkyo TX-SR383 scored 6, and Pioneer Elite SC-LX904 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|
|Other streaming services||has not||Deezer, TIDAL, Pandora|
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-SR383 got 6 points, but Pioneer Elite SC-LX904 received 9 points.
Onkyo TX-SR383 is equipped with 4/1 HDMI inputs and outputs, and Pioneer Elite SC-LX904 has 7/3 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 Pioneer Elite SC-LX904.
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 Onkyo TX-SR383 in the HDCP 2.2 version, and Pioneer Elite SC-LX904 has the HDCP 2.3 version.
Connecting a vinyl player or phonograph is possible using a Phono input which is represented by mini-jack or RCA connectors. Only the Elite SC-LX904 has a Phono interface.
|HDMI ARC (Audio Return Channel)||✔||✔|
|HDMI eARC (Enhanced Audio Return Channel)||✖||✔|
|Digital content protection (HDCP)||HDCP 2.2||HDCP 2.3|
|Subwoofer output (LFE)||2||2|
|Headphone output||1 x 6.3||1 x 6.3|
|Optical digital input||1||3|
|Coaxial digital input||1||2|
|Phono (MM) input||✖||✔|
|Front panel connectors||USB, phones, setup mic||USB, 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 TX-SR383 were rated 6 out of 10 against the 10 for the Elite SC-LX904.
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 Pioneer Elite SC-LX904.
|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||✔||✔|
|Video conversion||✖||analog to HDMI|
|Analog to HDMI scaling||✖||✔|
|HDMI to HDMI scaling||✖||✔|
|Other video features||DeepColor, x.v.Color, BT.2020, HLG||x.v.Color, HLG, BT.2020|
In terms of evaluating additional features, the TX-SR383 got 4 points, but the Elite SC-LX904 has 9.
Voice control allows you to control the basic functions of the receiver through a smartphone, smart speaker or using the microphone that comes with the kit. The Elite SC-LX904 can be controlled by voice via Amazon Alexa.
|Voice control||✖||Amazon Alexa|
|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.
|Zone audio output||speaker||speaker, preout|
|Zone HDMI output||✖||✔|
|Multi-room control||has not||Pioneer Control App, FlareConnect|
|Remote control input/output (IR)||0/0||1/1|
|DC trigger output (12V)||0||2|
Onkyo TX-SR383 got 5 points for the multichannel surround sound and Pioneer Elite SC-LX904 got 8.
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. Pioneer Elite SC-LX904 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 Elite SC-LX904.
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 Elite SC-LX904 licensed by IMAX.
|Dolby (other)||Dolby Pro Logic||Dolby Digital Plus, Dolby Atmos Height Virtualization|
|DTS HD Master||✔||✔|
|DTS (other)||has not||DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS|