Let's make the Onkyo TX-RZ840 versus Yamaha RX-A770BL comparison. According to the results of our review, Onkyo TX-RZ840 received 8.4 points out of 10 possible, and Yamaha RX-A770BL was rated 8.1 points. The release date of TX-RZ840 is 2019, and RX-A770BL is 2017. After comparison, it will become clear that among these two devices, the TX-RZ840 is more suitable for the role of the heart of home theater system.
For the built-in amplifier, the models have rated 8 points out of 10.
The number of channels is equal to the number of possible connected speakers. The Onkyo TX-RZ840 supports 9.2-channels sound, but Yamaha RX-A770BL 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.
TX-RZ840 | RX-A770BL | |
---|---|---|
Channels | 9.2 | 7.2 |
Stereo power (RMS), W/Ohm | 180/6 | 95/8 |
Output impedance, Ohm | 6 | 8 |
Frequency response | 10Hz-100KHz | 10Hz-100KHz |
THD in stereo, % | 0.08 | 0.06 |
After reviewing the audio features of each model, we can rate the TX-RZ840 9 out of 10, and the RX-A770BL - 8.
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.
TX-RZ840 | RX-A770BL | |
---|---|---|
Digital to analog converter (DAC) | AKM 384 KHz/32-bit | Burr-Brown 192 KHz/24-bit |
Bi-amping | ✔ | ✔ |
Pure direct (straight) | ✔ | ✔ |
Auto speaker calibration | AccuEQ | YPAO |
Speaker A/B switching | ✖ | ✖ |
Other audio features | Advanced Music Optimizer, Theater-Dimensional, Hi-Res audio | CINEMA DSP 3D, Compressed Music Enhancer, Virtual CINEMA FRONT, Extra Bass |
The connectivity of competitors in our comparison is equal and was rated 8 out of 10.
Bluetooth connection is now one of the main communication protocols for the receiver's control or even music broadcasting.
DLNA is the perfect way to use your local cloud storage to stream movies and music directly to a TV. You can use the DLNA protocol only with Yamaha RX-A770BL.
TX-RZ840 | RX-A770BL | |
---|---|---|
Wi-Fi | ✔ | ✔ |
USB | 1 (USB 2.0) | 1 (USB 2.0) |
Bluetooth | ✔ | ✔ |
Ethernet (RJ45) | 1 | 1 |
DLNA | ✖ | ✔ |
MHL | ✖ | ✖ |
Now music streaming services are gaining more and more popularity. They allow users to listen to millions of songs by subscription.
TX-RZ840 | RX-A770BL | |
---|---|---|
Apple Music (AirPlay) | AirPlay, AirPlay 2 | AirPlay |
Amazon Music | ✔ | ✖ |
Spotify | ✔ | ✔ |
Other streaming services | Deezer, TIDAL, Pandora, TuneIn Radio | Deezer, TIDAL, Pandora, Napster, SiriusXM |
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 8 points on our 10-point scale.
Onkyo TX-RZ840 is equipped with 7/2 HDMI inputs and outputs, and Yamaha RX-A770BL has 6/1 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 only on Onkyo TX-RZ840.
TX-RZ840 | RX-A770BL | |
---|---|---|
HDMI input/output | 7/2 | 6/1 |
HDMI ARC (Audio Return Channel) | ✔ | ✔ |
HDMI eARC (Enhanced Audio Return Channel) | ✔ | ✖ |
HDMI CEC | ✔ | ✔ |
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 | 1 | 2 |
Coaxial digital input | 1 | 2 |
Composite input | 2 | 1 |
Component input/output | 1/0 | 1/0 |
Phono (MM) input | ✔ | ✔ |
Front panel connectors | HDMI, phones, setup mic | 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-RZ840 were rated 8 out of 10 against the 10 for the RX-A770BL.
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 Yamaha RX-A770BL.
TX-RZ840 | RX-A770BL | |
---|---|---|
HDR (High Dynamic Range) | HDR10 | 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 |
Analog to HDMI scaling | ✖ | ✔ |
HDMI to HDMI scaling | ✖ | ✔ |
Dolby Vision | ✔ | ✔ |
Other video features | DeepColor, x.v.Color, HLG, BT.2020 | DeepColor, x.v.Color, HLG, BT.2020 |
In terms of evaluating additional features, the TX-RZ840 got 9 points, but the RX-A770BL has 10.
Yamaha RX-A770BL has the ECO mode.
TX-RZ840 | RX-A770BL | |
---|---|---|
Voice control | Google Assistant | Amazon Alexa |
App control | iPhone, iPad, iPod, Android | iPhone, iPad, iPod, Android |
Display | fluorescent | colour OSD |
Tuner | AM, FM | AM, FM |
Sleep timer | ✔ | ✔ |
Auto power off | ✔ | ✔ |
ECO mode | ✖ | ✔ |
Graphical user interface (GUI) | ✔ | ✔ |
Setup assistant | ✔ | ✔ |
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.
TX-RZ840 | RX-A770BL | |
---|---|---|
Multi-room zones | 3 | 2 |
Zone audio output | speaker, preout | speaker |
Zone HDMI output | ✔ | ✖ |
Multi-room control | FlareConnect | MusicCast, AV Controller |
RS-232 | 1 | 0 |
Remote control input/output (IR) | 1/0 | 1/1 |
DC trigger output (12V) | 1 | 1 |
Onkyo TX-RZ840 got 8 points for the multichannel surround sound and Yamaha RX-A770BL got 7.
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. Only the TX-RZ840 licensed by IMAX.
TX-RZ840 | RX-A770BL | |
---|---|---|
Dolby Atmos | ✔ | ✔ |
Dolby TrueHD | ✔ | ✔ |
Dolby Surround | ✔ | ✔ |
Dolby (other) | Dolby Digital Plus, Dolby Atmos Height Virtualization | Dolby Digital Plus |
DTS:X | ✔ | ✔ |
DTS HD Master | ✔ | ✔ |
DTS Virtual:X | ✖ | ✖ |
DTS Neural:X | ✔ | ✔ |
DTS (other) | DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS | DTS-EXPRESS, DTS Neo:6 Cinema, DTS Neo:6 Music |
Auro-3D | ✖ | ✖ |
IMAX Enhanced | ✔ | ✖ |
Multichannel stereo | ✖ | ✖ |