Onkyo TX-RZ840 9.2 Channel A/V Network Receiver - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 56 Old 05-01-2019, 04:10 AM - Thread Starter
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Onkyo TX-RZ840 9.2 Channel A/V Network Receiver

Onkyo’s April 30, 2019 Press Release:

Premium RZ Series AVRs Get a High-Octane Upgrade with Strengthened Amps and IMAX® Enhanced Certification

Press Release dated: 30 Apr 2019
ONKYO, JAPAN. Onkyo has added two THX® Certified Select™ and IMAX® Enhanced*1 certified Network A/V Receivers to its premium RZ Series line, each featuring exclusive high-performance amplification systems and state-of-the-art multi-room audio capabilities for enthusiasts demanding a visceral entertainment experience.

The 9.2-ch TX-RZ840 (215 W/Ch, 6 ohms, 1 kHz, 10% THD, 1-ch driven) and 9.2-ch TX-RZ740 (185 W/Ch, 6 ohms, 1 kHz, 10% THD, 1-ch driven) provide a stable, easy-to-use platform for multi-room entertainment and are perfectly optimised to deliver high-end Dolby Atmos® and DTS:X® surround-sound through speaker layouts of up to 7.2.4 channels (with external power amp) as well as involving musicality with stereo sources. Dolby Surround® and DTS® Neural:X upmixers employ height speakers when playing legacy soundtracks, while Dolby Atmos Height Virtualizer*1 enables immersive listening with Dolby® formats by creating a virtual surround and height effect from traditional speaker layouts.

These are also the first Onkyo AVRs that have been designed to conform with the IMAX® Enhanced*1 program, which features DTS:X immersive audio decoding that is optimised to properly reproduce the full dynamic range of IMAX theatrical sound mixes available in digitally re-mastered IMAX Enhanced content. The IMAX Mode reproduces lMAX Enhanced content at the highest levels, just as the filmmakers intended. IMAX Enhanced versions of films, from Hollywood blockbuster movies to documentary films, are scheduled for 4K HDR streaming and Ultra HD Blu-ray™ release. Furthermore, the TX-RZ740 and TX-RZ840 are THX® Certified Select™ following 2,000 bench-tests in 75 categories, satisfying THX® requirements for cinema-reference volume in rooms where the viewing position is about 3.5 m from the screen.

As members of the RZ Series, both products have upgraded Dynamic Audio Amplification (DAA) systems. DAA stabilises high power delivery from a custom-made High-Current Low-Noise Power Transformer and customised, high-current smoothing capacitors, resulting in accurate speaker control and truly spectacular dynamics. Discrete non-phase-shift amps capture a wide 5 Hz–100 kHz frequency response. An extruded aluminium heat-sink controls the length and pitch of resonance frequencies, limiting vibration, while the TX-RZ840’s heat-sink gains black anodised paint that improves cooling efficiencies and reduces thermal distortion. This model announces its hi-fi credentials with an aluminium alloy front-panel and flap door.

All parts are selected on a listen-measure-listen basis rather than just by assessing their theoretical performance, a resource-intensive way to design, but one that results in subjectively and objectively better sound. A new HDMI® board features shorter signal-paths and larger, carefully refined ground paths for clean A/V signals. The Quad-core SoC (System on a Chip) is isolated to prevent interference, and the power-supply line is further strengthened for 4-ohm driving power. These enhancements result in improved S/N (signal-to-noise) performance and faster dynamic response, and can be felt physically in deep, taut bass, and precise instrument separation and sound localisation on an expanded soundstage.

The natural articulation of sound inside the listening space is enhanced by the use of AccuEQ Advance 9-point room acoustic calibration. This measures sound at nine positions to precisely calibrate and EQ speakers and subwoofers and remove standing waves from the room. Standing waves occur when sound from the speakers resonates with sound reflecting off the walls, compromising its intended expression. During the calibration process, the system detects and compensates for background noise to ensure accurate equalisation. AccuReflex™ optimises 3D sound through Dolby enabled speakers by resolving phase-shift, resulting in a cohesive sound-field.

Amplified signals can be shared to speakers in up to three rooms (including the Main room) at once with unique digital and analogue sources playing in each zone (analogue/HDMI/SPDIF/NET/Bluetooth®*2 in Zone 2 and analogue/NET/Bluetooth in Zone 3), or the same content synced via Zone 2 and Zone 3 speaker outputs. With nine channels, separate Zone 2 and Zone 3 DACs, and 11.2-channel pre-outs, customers have the freedom to choose from a variety of possible speaker layouts with switchable, app-controlled audio in other areas of the home.

For listeners expanding a multi-room network audio ecosystem, both products feature Works with Sonos, Chromecast built-in*3, AirPlay 2, DTS Play-Fi®, and FlareConnect™*4. As the heart of home entertainment, users can enjoy integrated Amazon Music*5, Spotify®*5, TIDAL*5, Deezer*5, and TuneIn*5 services on their home cinema or share it around the home to supported speakers. RZ Series receivers can join an existing Sonos Home Sound System, or be the start of a new one, just by pairing with a Sonos Connect*6. They will wake, change inputs, and play at the desired volume on command from the Sonos app*7. With Chromecast built-in, users can stream any music from smartphone, laptop, or PC to the receiver with ease. Control playback with Chromecast-enabled apps from iPhone, iPad, Android™ phone or tablet, Mac or Windows® laptop, or Chromebook. When used together with a smart speaker featuring the Google Assistant, content can be cued, played, and controlled by voice.

The TX-RZ840 and TX-RZ740 feature a new quad-core SoC. It offers evolved network functions and supports the high-speed 802.11ac 2x2 MIMO Wi-Fi®*8 specification while remaining compatible with dual-band 802.11b/g/n routers. Both AVRs are equipped for Hi-Res Audio playback. An AKM multichannel DAC supports 384 kHz/32-bit digital-to-analogue conversion, and traces of digital pulse-noise from the D/A conversion process are erased by VLSC™ (Vector Linear Shaping Circuitry) on the Front L/R channels. The TX-RZ840 supports DSD Direct 11.2 MHz*9 playback, while both products can convert DSD 11.2/5.6/2.8 MHz*9 to pristine PCM signals. FLAC, WAV [RIFF], AIFF, and ALAC are supported to 192 kHz/24-bit*10 resolution. Vinyl record collectors will note the discrete MM phono pre-amp on both receivers and Pure Audio mode for natural analogue sound. SPDIF and coaxial digital inputs handle lossless audio from a variety of players and devices.

Several exclusive features increase flexibility and enhance the user experience. On the interface side, the OSD includes a function that displays A/V input-output information. Users can view source data such as HDR format, video resolution, frame-rate, and audio codec, and compare it to the output playback settings without interrupting program playback, ensuring optimal playback quality. A new DSP-controlled Vocal Enhancer is accessed via keys on the remote control or front panel, and allows frequencies occupied by dialogue to be raised or lowered through five steps. The user’s preferred start-up volume level for each A/V input can also be pre-set with a long push on the front-panel input key, while the receivers will power on automatically when an input key is touched. Stereo Assign Mode can switch front-speaker playback to ceiling speakers for ambient BGM listening.

The Zone B/Zone 2 line-out function has also been improved to support wireless headphone transmitter connection via analogue RCA terminals, as well as hi-fi systems in another room. In Zone 2 mode, the same or different analogue/digital sources (including SPDIF*2 and HDMI*2) can be played in either or both rooms at the same time. Zone B*11 mode is ideal for use with a supported wireless headphone transmitter. Listen to any main-room source through compatible wireless headphones for disruption-free late-night TV entertainment.

Both products have seven HDMI inputs (one front), Main output, and Sub/Zone 2 output*12 for a projector or second display. All inputs support 4K/60p, HDR10, Dolby Vision™, HLG (Hybrid Log Gamma), WCG (Wide Colour Gamut) as specified by BT.2020, and HDCP 2.2. The TX-RZ840 also features eARC (Enhanced Audio Return Channel) on the Main HDMI output, enabling HD audio transmission from an eARC-compatible TV to the receiver. It works with Dolby Atmos and DTS:X as well as Dolby® Digital, Dolby® TrueHD and DTS-HD Master Audio™ via tuner or video streaming apps built into Smart TVs. Both are generously equipped with analogue and digital audio inputs as well as analogue video inputs. These receivers are ready to be slotted into professional installswith bi-directional Ethernet LAN for IP control, RS-232 serial control port, IR input, 12 V trigger out, OSD output, and optional rack-mount kit making for smooth custom integration with leading home automation systems.

Whether purchased to reinvigorate an existing home cinema or selected as a first AVR to deliver uncompromising reference-grade sound, these two RZ Series products will surpass the very highest expectations.

Onkyo, Japan

*1 Activated with a future firmware update. *2 When set to Zone 2, SPDIF and HDMI support PCM signals, HDMI audio is available on inputs 1–3, and simultaneous playback of multiple audio sources is enabled. *3 The unit may automatically download and apply an Over-the-Air software update during setup. *4 FlareConnect is a proprietary network protocol that shares select audio sources between supported components. Please visit the Onkyo website for product compatibility information. *5 Service availability varies with region and subscriptions may be required. *6 Requires a Sonos Connect (sold separately). *7 Available free at the App Store and Google Play for iPhone, iPad, and Android devices. Please check device and OS requirements before installation. *8 Some countries or regions have regulations that affect wireless signal strength and the use of Wi-Fi channels. *9 DSD playback over Wi-Fi cannot be guaranteed in all network environments. *10 Supported sampling rates may vary depending on the network environment. ALAC is supported to 96 kHz. *11 When set to Zone B, encoded and non-encoded PCM playback for all inputs is enabled in Main and Zone B. *12 HDMI Zone 2 Out mode supports signals from HDMI inputs 1–3 only, and the same or separate sources can be output via Main and Zone 2 Out simultaneously. HDMI Sub Out mode supports signals from all HDMI inputs, and outputs the same source as the Main output only.



Due to a policy of continuous product improvement, Onkyo reserves the right to change specifications and appearance without notice. THX and the THX logo are trademarks of THX Ltd., registered in the U.S. and other countries. THX CERTIFIED SELECT and the THX SELECT application icon are trademarks of THX Ltd. For DTS patents, see http://patents.dts.com. Manufactured under license from DTS Licensing Limited. DTS, the Symbol, DTS and the Symbol together, DTS:X and the DTS:X logo, DTS Neural:X and the DTS Neural:X logo, and Play-Fi and the Play-Fi logo are registered trademarks or trademarks of DTS, Inc. © DTS, Inc. All Rights Reserved. Manufactured under license from IMAX Corporation. IMAX® is a registered trademark of IMAX Corporation in the United States and/or other countries. All Rights Reserved. Dolby, Dolby Atmos, Dolby Surround, Dolby Digital, Dolby Vision, and the double-D symbol are trademarks of Dolby Laboratories. The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries. SONOS is a trademark of SONOS, Inc. The Bluetooth® word mark and logos are owned by the Bluetooth SIG, Inc. Apple, AirPlay, Mac, iPad, and iPhone are registered trademarks of Apple Inc. App Store is a service mark of Apple Inc., in the US and other countries. Google, Android, Google Play, Chromebook, Chromecast built-in and other related marks and logos are trademarks of Google LLC. Wi-Fi® is a registered trademark of the Wi-Fi Alliance. The Wi-Fi CERTIFIED Logo is a certification mark of the Wi-Fi Alliance. Spotify and the Spotify logo are trademarks of the Spotify Group, registered in the U.S. and other countries. The Product with the Hi-Res Audio logo is conformed to Hi-Res Audio standard defined by Japan Audio Society. The Hi-Res Audio logo is used under license from Japan Audio Society. Amazon, Amazon Music, and all related logos and motion marks are trademarks of Amazon.com, Inc. or its affiliates. Blu-ray Disc™, Blu-ray™, Ultra HD Blu-ray™ and the logos are trademarks of the Blu-ray Disc Association. Dynamic Audio Amplification, FlareConnect, Music Optimizer, VLSC, and AccuEQ are registered trademarks or trademarks of Onkyo Corporation. All other trademarks and registered trademarks are the property of their respective holders.

Manual and spec sheet can be downloaded here:

https://www.it.onkyo.com/en/manuals-441.html
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post #2 of 56 Old 05-06-2019, 10:54 PM
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Smile hdmi

Good news, at least there is a newly designed hdmi board that may be more robust that the precedent version.
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post #3 of 56 Old 05-08-2019, 06:11 AM
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What's the price of the TX-RZ840?
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post #4 of 56 Old 05-08-2019, 08:08 AM - Thread Starter
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What's the price of the TX-RZ840?

I've only seen pricing in Europe at $1,199 GBP. I'll guess it will be $1,299 USD.
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post #5 of 56 Old 05-12-2019, 12:18 PM
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Good. Now I have to wait for 6 months at least to see if HDMI issues have been eradicated before I prep my wallet
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post #6 of 56 Old 05-12-2019, 04:14 PM
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Good. Now I have to wait for 6 months at least to see if HDMI issues have been eradicated before I prep my wallet
What HDMI issues are you referring to?

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post #7 of 56 Old 05-13-2019, 05:50 AM
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"...the TX-RZ840’s heat-sink gains black anodised paint that improves cooling efficiencies and reduces thermal distortion."

Can someone with a better brain explain this to me? Mine tells me that adding anything to a heatsink *reduces* cooling efficiency.
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post #8 of 56 Old 05-13-2019, 11:21 AM
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In comparison with the competition, say Denon AVR-X3500 and 4500 how does it stands?
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post #9 of 56 Old 05-13-2019, 01:33 PM - Thread Starter
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In comparison with the competition, say Denon AVR-X3500 and 4500 how does it stands?
It hasn’t been released yet so any comparison is just speculation. Based on the TX-RZ830 I would guess the 840 would have similar performance to the Denon 4500.
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post #10 of 56 Old 05-13-2019, 01:44 PM
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Looking at the specs on paper, I find the Denon 4500 superior than the Onkyo 830, but the new 840 seems to be a huge upgrade from it's predecessor and will be superior than the Denon, correct?
On paper off course
I'm planning upgrade my home cinema and I have decided about the speakers. I was undecided about the A/V Receiver, struggling between Denon 3500 and 4500, but this new Onkyo will make the decision even harder

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post #11 of 56 Old 05-13-2019, 02:02 PM - Thread Starter
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Looking at the specs on paper, I find the Denon 4500 superior than the Onkyo 830, but the new 840 seems to be a huge upgrade from it's predecessor and will be superior than the Denon, correct?
On paper off course
I'm planning upgrade my home cinema and I have decided about the speakers. I was undecided about the A/V Receiver, struggling between Denon 3500 and 4500, but this new Onkyo will make the decision even harder
I own the Denon 4400 also and it is pretty similar to the 830. I think your room makes a difference as well as room correction (Audyssey v. ACCUEQ), features, etc. I personally like what Onkyo’s ACCUEQ does in my living room. I just like it a little better than the Denon. I’m sure others may like the Denon better in their rooms. I wouldn’t go by what’s on paper. Sound is so subjective.
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post #12 of 56 Old 05-13-2019, 02:23 PM
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If we could test them on our own rooms for a few days it would make a ton of difference... without that, we have to rely on what's on paper and people's opinions and reviews. Hard....

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post #13 of 56 Old 05-13-2019, 02:33 PM - Thread Starter
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If we could test them on our own rooms for a few days it would make a ton of difference... without that, we have to rely on what's on paper and renewal opinions and reviews. Hard....
Yes, I agree. I do get excited when I read the specs and they look good or see pics of a large toroidal transformer or audiophile capacitors, etc. The 840’s specs do look promising. I’m looking forward to some user reviews.
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post #14 of 56 Old 05-13-2019, 02:39 PM
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People are still worried about the hdmi board ? Onkyo RZ series has never had a problem with the hdmi board, i have the RZ5100 since 2016, i've never even have had a problem with ARC. Are some of you people skeptical of hdmi boards still living in 2014 or what?
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post #15 of 56 Old 05-13-2019, 03:14 PM
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Originally Posted by Djuganight View Post
Looking at the specs on paper, I find the Denon 4500 superior than the Onkyo 830, but the new 840 seems to be a huge upgrade from it's predecessor and will be superior than the Denon, correct?
On paper off course
I'm planning upgrade my home cinema and I have decided about the speakers. I was undecided about the A/V Receiver, struggling between Denon 3500 and 4500, but this new Onkyo will make the decision even harder
Even on paper how do you think this is a huge upgrade? They fixed a HDMI board that wasn't broke and slapped a certification on it that the audio side has been included on the last 3 generations (DTS X). My 830 runs very cool to the touch even at reference level so the heatsink is irrelevant in my case as well. The HDMI spec has not changed either. Please enlighten me? I want to want the 840 and be jealous that I got the 830 2 months ago and sell one of my kids to upgrade.
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post #16 of 56 Old 05-13-2019, 03:26 PM
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Even on paper how do you think this is a huge upgrade? They fixed a HDMI board that wasn't broke and slapped a certification on it that the audio side has been included on the last 3 generations (DTS X). My 830 runs very cool to the touch even at reference level so the heatsink is irrelevant in my case as well. The HDMI spec has not changed either. Please enlighten me? I want to want the 840 and be jealous that I got the 830 2 months ago and sell one of my kids to upgrade.
To point out exactly what are the improvements I would have to put them side by side, but just having eArc is a huge future proof feature.
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Isn't eARC only an upgrade if you want to send Atmos/DTS:X from your TV to your AVR using ARC?

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post #18 of 56 Old 05-14-2019, 12:15 AM
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Isn't eARC only an upgrade if you want to send Atmos/DTS:X from your TV to your AVR using ARC?
Which is my case exactly.
I have and LG Oled and I watch Netflix a lot on the built in app which has dolby aymos, dolby vision, etc etc.
The Onky also seems to lack Auro 3D which in my case is useless and I'm sure to the majority too.
The Onkyo seem to have more power and improved the sound quality. 
I'm ready for the reviews and since its being released soon I find odd the fact they haven't started promoting it yet.
I think this people is sleeping above shape eheheheh
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I thought the rz830 got the earc update in the latest firmware?
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post #20 of 56 Old 05-14-2019, 01:47 PM - Thread Starter
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I thought the rz830 got the earc update in the latest firmware?
Yes it did.
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post #21 of 56 Old 05-14-2019, 01:51 PM
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Thanks bslep! No need to wait then, I think the rz830 order is going to be placed this week!
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post #22 of 56 Old 05-15-2019, 11:39 AM
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Which is my case exactly.
I have and LG Oled and I watch Netflix a lot on the built in app which has dolby aymos, dolby vision, etc etc.
The Onky also seems to lack Auro 3D which in my case is useless and I'm sure to the majority too.
The Onkyo seem to have more power and improved the sound quality. 
I'm ready for the reviews and since its being released soon I find odd the fact they haven't started promoting it yet.
I think this people is sleeping above shape eheheheh
You don't need eARC for your use case - Netflix Atmos is compressed and delivered as a version of Dolby Digital Plus, due to streaming bandwith limitations. This has the benefit of allowing it to be sent over regular ARC from the TV to compatible receivers/soundbars.
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post #23 of 56 Old 05-15-2019, 11:53 AM
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You don't need eARC for your use case - Netflix Atmos is compressed and delivered as a version of Dolby Digital Plus, due to streaming bandwith limitations. This has the benefit of allowing it to be sent over regular ARC from the TV to compatible receivers/soundbars.
Perhaps not ATM.
As an example, recently Netflix received a sound upgrade with the increase of bitrate and so on and so on. These things are always improving and fast and having eArc is always better than not having in terms of future proofing
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post #24 of 56 Old 05-15-2019, 12:07 PM
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Perhaps not ATM.
As an example, recently Netflix received a sound upgrade with the increase of bitrate and so on and so on. These things are always improving and fast and having eArc is always better than not having in terms of future proofing
Oh, absolutely! I support futureproofing, especially if the price difference is minimal and the new technology is relatively close to becoming commonplace.

One question I have about eARC is that if someone had one of the current 8K TVs and available receivers, if they could connect hypothetical HDMI 2.1 8K sources to the TV and use that for switching, and then send all audio to AVR over HDMI 2.0 eARC?

I wonder if there's an HDCP change coming with HDMI 2.1 (whenever that arrives) that is gonna make a whole bunch of people buy a bunch of new equipment all over again? I know 8K isn't going to be common for a few years, but still.
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post #25 of 56 Old 05-16-2019, 12:31 AM
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With eARC, the TX-RZ840 will be able to receive DD+ audio from the TV.
But my guess is that an eARC capable TV is needed: from a ARC capable TV the receiver will only get DD (non +).
Can somebody confirm?
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post #26 of 56 Old 05-16-2019, 01:11 AM
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Awesome! Great news from Onkyo. Availability?
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With eARC, the TX-RZ840 will be able to receive DD+ audio from the TV.
But my guess is that an eARC capable TV is needed: from a ARC capable TV the receiver will only get DD (non +).
Can somebody confirm?
Can't speak for the RZ840, but you don't need eARC to transport DD+, regular ARC will carry it since it's below the 1MBps bandwith limit.

This is how some TVs allow for compressed ATMOS to be transported from the TV apps (e.g. Netflix, VUDU) to a soundbar or receiver over the ARC connection.
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post #28 of 56 Old 05-16-2019, 11:14 AM
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Quote:
Originally Posted by valerianf View Post
With eARC, the TX-RZ840 will be able to receive DD+ audio from the TV.
But my guess is that an eARC capable TV is needed: from a ARC capable TV the receiver will only get DD (non +).
Can somebody confirm?
I get DD+ and Dolby Atmos (DD+ version)from my Smart TV using Vudu, Netflix, Prime now to my 2016 Denon x3300 and neither TV nor AVR have eARC

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post #29 of 56 Old 05-16-2019, 08:18 PM
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Thank you for your feedback.
I guess that I do not get DD+ through ARC because my Yamaha RX-A700 is only hdmi1.2


At the end of the year I have big hope to by a TX-RZ840 if there are good rebates.
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post #30 of 56 Old 05-17-2019, 12:05 AM
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Big question, Onkyo or Denon 4500
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