Today, in our Onkyo TX-RZ840 review, we will look at a new 2019 entry, as this is one of two new models revealed, the other being the TX-RZ740. Onkyo appears to be changing only the units they think necessary rather than their whole portfolio every year as they did in 2017.

To be honest, this is a clever marketing and production move, and with more features being added every year, it is becoming somewhat of a necessity. If you are interested in this model, keep reading our Onkyo TX RZ840 review for more information below.

Onkyo TX RZ840

Description: The TX-RZ840 is a true powerhouse on paper, but we’re here to see if all of that translates into the amazing audio experience that Onkyo promises.  

About: The Onkyo TX-RZ840 was released in 2019. It has a 9 channel amplifier and can handle up to 11.2 channels at a time.


  • Excellent build quality
  • IMAX and THX Enhanced certification
  • Outstanding performance
  • There are several features and connectivity possibilities


  • There is no Auro-3D or DTS Virtual:X
  • There is no Amazon Alexa support
  • fewer ports than competitors
  • Remote control that appears simple and inexpensive


The design is the same as the 2018 TX-RZ830 device, which was to be expected given that we are used to seeing identical designs on yearly releases.

This device is very large, measuring 17 1/8′′ x 7 15/16′′ x 15 11/16′′ (435 x 201.5 x 398 mm) and weighing 23.8 lbs (10.8 kg), however, we have seen larger and heavier units in this category according to this Onkyo TX RZ840 review.

As we advise in all of our evaluations for these rather big units, having some breathing space around the unit is always recommended for better cooling and ventilation. Let’s explore what the front face has to offer.

Unlike most other AV receivers, Onkyo appears to still refuse to employ a rotating knob for input selection, instead opting for separate buttons for all of their inputs. And we see them doing this throughout their whole collection, making it a trademark of their designs.

As a result, the right side has a large volume knob, while the top has 15 small circular buttons for inputs, streaming, Bluetooth, and Zone 2/3 functions according to this Onkyo TX RZ840 review.


The obvious power button is on the left side, with the Pure Direct button beneath it, and controls for Listening Mode and Tone are below. The display in the upper center side is in charge of displaying all of the receiver’s main functions, while the flip-door below houses extra buttons and a few frontal ports.

Buttons feature navigation controls as well as numerous sound functions, including a headphones jack, an HDMI input, and a calibration microphone port located below. All additional ports are placed in the back, and we will discuss them later down in our review.


Since its inception in 1946, Onkyo has built a strong name in the speaker and audio component industries by providing innovative and high-performance products.

Initially specializing in speakers and stereo hi-fi devices (tape decks, M series amplifiers, turntables, radio tuners), the Japanese company attacked the home theater industry with the same zeal and accuracy, introducing the first THX-certified A/V receiver, the Onkyo TX-SV919THX, in 1993.

It was succeeded in 1996 by the Onkyo TX-DS939, the first THX 5.1 certified A/V receiver.


The Onkyo TX-RZ840 A/V receiver includes a power cord, a remote control, two AAA batteries, an AM antenna, a wired FM antenna, and an acoustic calibration microphone according to this Onkyo TX RZ840 review.

Brief installation instruction is included, as are many pamphlets showcasing the brand’s various items. Although there is no printed user manual included, a thorough 200-page PDF version may be downloaded from the manufacturer’s website.


The imposing front panel of the Onkyo TX-RZ840 receiver sets the tone from the first visual contact: this is an amazing A/V receiver intended to pack a punch! An Onkyo A/V receiver with a special power transformer and electrolytic capacitors to withstand the huge dynamic shifts in movie soundtracks, according to a sticker on the liftable panel.

As a result, it may supply speakers with a great deal of strength and spectators with tremendous emotions according to this Onkyo TX RZ840 review.


HDMI inputs/outputs support 4K/60 Hz, HDR10, HLG, Dolby Vision, 3D, and ARC (with the HDMI Main Out). Acoustic calibration using an AccuEQ microphone and audio correction for the room.

Remote control

Finally, the brand’s effort to develop a user-friendly remote control should be commended. It is separated into three sections that are rather compact.

The upper section has the on/standby button, the source and HDMI selector, as well as the play/pause, next track, previous track, and repeat/random buttons. The menu navigation buttons, which may also be used to search for and pre-select radio stations, dominate the center section.

The lower section has audio settings keys with tone and volume controls, audio mode selection buttons (Movie/TV, Music, Game), and Zone 2 and Zone 3 activation buttons.

Conclusion: Onkyo TX RZ840 [2022 Review]

Without a doubt, the Onkyo TX-RZ840 A/V receiver is a master of spatialization and surround sound effects. It brings the actors on film to life with accuracy and authenticity, using both majestic and personal sounds. It can be explosive when needed, but it also understands how to be more restrained and subtle when the soundscape demands it.

It produces a stunning soundstage, allowing the viewer to be totally absorbed in the action that unfolds well beyond the bounds of the screen. The placement and timing of sound effects are exceedingly accurate.

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