Let's compare Onkyo TX-NR676 versus Denon HEOS AVR for an overview of all their pros and cons. According to the results of our review, Onkyo TX-NR676 received 7.2 points out of 10 possible, and Denon HEOS AVR was rated 4.8 points. Both AV receivers were introduced in 2017. And as a result of the comparison, TX-NR676 seems to be a better option for the role of a home theater center than HEOS AVR.
For the built-in amplifier, the devices received different marks - 7 and 6, 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 HEOS AVR supports a 5.1-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-NR676 this value is 165/6 W/Ohm, and for the HEOS AVR it is 65/6 W/Ohm.
|Stereo power (RMS), W/Ohm||165/6||50/8, 65/6|
|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 HEOS AVR - 5.
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-NR676.
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||N/A|
|Pure direct (straight)||✔||✔|
|Auto speaker calibration||AccuEQ||✖|
|Speaker A/B switching||✖||✖|
|Other audio features||Hi-Res audio, Theater-Dimensional||has not|
The connectivity of competitors in our comparison is markedly different, Onkyo TX-NR676 scored 8, and Denon HEOS AVR scored 7 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, 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 HEOS AVR received 5 points.
Onkyo TX-NR676 is equipped with 7/2 HDMI inputs and outputs, and Denon HEOS AVR 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-NR676 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||1|
|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, 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 5 for the HEOS AVR.
HDR pass-through gives you the possibility to broadcast HDR content directly from source to TV without the processing of the receiver. HDR support is available only on the Onkyo TX-NR676.
|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||BT.2020||has not|
In terms of evaluating additional features, the TX-NR676 got 8 points, but the HEOS AVR has 4.
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 HEOS AVR can be controlled by voice via Amazon Alexa, Google Assistant. Only the Onkyo TX-NR676 has the ECO mode.
|Voice control||✖||Amazon Alexa, Google Assistant|
|App control||iPhone, iPad, iPod, Android||iPhone, iPad, iPod, Android|
|Auto power off||✔||✖|
|Graphical user interface (GUI)||✔||✖|
|Firmware update||network, USB||network, 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.
|Multi-room zones||2||has not|
|Zone audio output||speaker, preout||has not|
|Zone HDMI output||✖||has not|
|Multi-room control||FlareConnect, HEOS App||HEOS App|
|Remote control input/output (IR)||0/0||1/0|
|DC trigger output (12V)||0||0|
Onkyo TX-NR676 got 7 points for the multichannel surround sound and Denon HEOS AVR 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-NR676 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-NR676.
|Dolby (other)||Dolby Digital Plus||Dolby Pro Logic|
|DTS HD Master||✔||✔|
|DTS (other)||DTS-ES, DTS 96/24, DTS-HD EXPRESS||has not|