An overview of Onkyo TX-NR676 and Denon AVR-X4400H will help us understand the many features that the devices are equipped with. According to the results of our review, Onkyo TX-NR676 received 7.2 points out of 10 possible, and Denon AVR-X4400H was rated 9.6 points. Both AV receivers were introduced in 2017. And as a result of the review, it becomes clear that TX-NR676 is inferior in audio processing features to AVR-X4400H.
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-NR676 supports 7.2-channels sound, but Denon AVR-X4400H 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. In terms of RMS power, the models have the same characteristics - 165/6/6 W/Ohm.
|Stereo power (RMS), W/Ohm||165/6||125/8, 165/6|
|Output impedance, Ohm||6||8, 6|
|THD in stereo, %||0.08||0.05|
After reviewing the audio features of each model, we can rate the TX-NR676 9 out of 10, and the AVR-X4400H - 10.
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. Denon AVR-X4400H can work with the main and additional set of speakers - and switch between them.
|Digital to analog converter (DAC)||AK4458 384 KHz/32-bit||AK4458 384 KHz/32-bit|
|Pure direct (straight)||✔||✔|
|Auto speaker calibration||AccuEQ||Audyssey MultEQ XT32|
|Speaker A/B switching||✖||✔|
|Other audio features||Hi-Res audio, Theater-Dimensional||Audyssey Dynamic Volume, Audyssey Dynamic EQ, Audyssey LFC, Compressed Audio Restorer|
The connectivity of competitors in our comparison is markedly different, Onkyo TX-NR676 scored 8, and Denon AVR-X4400H 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, AirPlay 2|
|Other streaming services||Deezer, TIDAL, Pandora, TuneIn Radio||Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud|
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-NR676 got 7 points, but Denon AVR-X4400H received 10 points.
Onkyo TX-NR676 is equipped with 7/2 HDMI inputs and outputs, and Denon AVR-X4400H has 8/3 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 Denon AVR-X4400H.
|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||2|
|Coaxial digital input||1||2|
|Phono (MM) input||✔||✔|
|Front panel connectors||HDMI, phones, setup mic, AUX||USB, HDMI, phones, setup mic, AUX|
|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-NR676 were rated 7 out of 10 against the 9 for the AVR-X4400H.
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 Denon AVR-X4400H.
|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||BT.2020||BT.2020, HLG|
In terms of evaluating additional features, the TX-NR676 got 8 points, but the AVR-X4400H has 10.
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 AVR-X4400H can be controlled by voice via Amazon Alexa, Google Assistant, Siri, Josh.AI.
|Voice control||✖||Amazon Alexa, Google Assistant, Siri, Josh.AI|
|App control||iPhone, iPad, iPod, Android||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||IP Control, Web 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||speaker, preout|
|Zone HDMI output||✖||✔|
|Multi-room control||FlareConnect, HEOS App||HEOS App, Denon 2016 AVR Remote|
|Remote control input/output (IR)||0/0||1/1|
|DC trigger output (12V)||0||2|
Onkyo TX-NR676 got 7 points for the multichannel surround sound and Denon AVR-X4400H got 9.
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. Denon AVR-X4400H has Auro-3D on its feature list.
|Dolby (other)||Dolby Digital Plus||Dolby Digital Plus|
|DTS HD Master||✔||✔|
|DTS (other)||DTS-ES, DTS 96/24, DTS-HD EXPRESS||DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS, DTS-Surround|