The AVR: Denon X3400H

The choice of AVRs used to be a difficult one to make when support for different HD audio formats was not widespread. Now, the requirements boil down to the AVR being able to support the latest HD audio formats (Dolby Atmos and DTS-X), while matching the capabilities of the display in the chain. The additional features may help sway the purchase decision for consumers.

Budget considerations dictate the number of channels and display zones. We had to migrate from the 7.1 channel Pioneer Elite VSX-32 to a newer receiver capable of handling multiple HDMI 2.0 / HDCP 2.2 inputs with passthrough capabilities for various HDR formats. Based on my budget, I narrowed down the options to one of the models from Denon, Onkyo, Pioneer, and Yamaha. They are all in the same ball park in terms of pricing for a given feature set. We deferred to our friends at Wirecutter, who recommended the Denon AVR S730H.

I had been in touch with Denon regarding HEOS (their whole home audio solution) when the decision to go with a Denon AVR for our HTPC testing setup was taken. Upon discussing our project with them, Denon graciously agreed to sponsor the more advanced AVR X3400H for use in our testing.

The AVR X3400H targets the custom integrator channel. It has a number of additional features such as support for high end DSD audio, 4Kp60 upconversion for analog sources, multi-zone video outputs, higher power output, and support for eARC (Enhanced Audio Return Channel) to justify its higher price over the S730H. The presence of eARC makes it a bit more future-proof, as it allows for HD audio (including the new ones like Dolby Atmos and DTS-X) from the display sink to be returned to the AVR for decode and playback.

In the course of our testing, we found that the AVR received frequent firmware updates to add new features such as HLG passthrough. These point to a well-supported product. Even though the web control feature present in the previous generation Denon AVRs was missed, the Denon AVR Android app made up for it to some extent. None of the issues encountered in the course of the evaluation presented in this piece could be attributed to the Denon AVR X3400H.

If we had to give some suggestions to Denon for the improvement of the AVR X3400H, it would be to bring back the web control feature and shorten the time taken for firmware updates (though there is a facility to enable auto-updates that tries to install the new firmware when the AVR is not being used).

Speakers

Most readers upgrading their HTPC can opt to retain their existing speakers. In fact, I had the Boston Acoustics Horizon Series MCS100MDNT 5.1-channel speaker system from a 2008 purchase, along with a Jamo A306 HCS 5.1 speaker system from my 2011 home theater components upgrade. However, due to the remodel, I had to go in for in-ceiling speakers. I opted for a couple of the Polk Audio RC80i in-ceiling pairs for the rear and surround channel speakers. I bundled them along with ceiling speaker protective covers. The choice of speakers depends on the home theater size and other requirements. Currently, I am using the Jamo A306 speakers for the front, center, and subwoofer, with the Polk Audio RC80i for the other channels.

The Display: TCL 55P607 Evaluating Display Sources: HTPCs & CE Devices
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  • Kevin G - Wednesday, December 27, 2017 - link

    In the market, it seems that 4K using HDMI 2.0 with HDCP 2.2 and HDR has finally settled things down after several years of turbulence. By my count we're at the five generation of consumer 4K/UHD. First we had the wave of 4K support only via HDMI 1.4/HDCP 1.4, then a half step with some HDMI 1.4/HDCP 2.0 displays which didn't see wide spread release as a new generation with HDMI 2.0/HDCP 2.0 was around the corner which could finally do 4k60. Then HDCP 2.2 came out making all the previous HDCP 2.0 displays incredibly short lived. Now we're seeing the advent of HDR being a standardized feature to go alongside 4k. All of this is over the course of 5 years. Finally have things settle down for 4K that getting content on the display as designed is not a headache as it has been in years past. Oh and 4K content is finally arriving with streaming services and 4K disc media.

    The problem with HDMI 2.1 is that there will likely be three generations of hardware that support. First wave, which will likely be shown off at CES 2018, will focus around higher frame rate transfer or higher resolution. As these devices start shipping in late 2018, there will likely be a new HDCP version to protect 8K content announced to make all the new displays only worthwhile as monitors for the first save of HDMI 2.1 video cards. Hooray for copy protection screwing over the consumer! Then I see another generation of displays accepting variable refresh rate as soon as Sony or MS update their console to support variable refresh rate. Ultimately a good thing gaming but it'll spur another round of obsolete hardware. Best time to adopt would be wait until 8K media has settled own on a distribution medium as once content becomes readily available, there is less incentive to change underlaying spec. That'll still be years away.
  • fallaha56 - Tuesday, December 26, 2017 - link

    Also...Gemini Lake cannot do HDR because of ‘power contraints’ but an iPhone or Samsung can?

    Really? Or is this just intel at it again
  • lowphas - Wednesday, December 27, 2017 - link

    A <75 usd android TV box can do 4k60fps hdr decode on paper. Usually they have a 5v2a power supply. But I dunno, never had one before.

    Tv sets are just a display panel and a small (maybe mobile?) soc in my eyes. There is virtually no power or thermal limitation inside a tv. (I have an mu7000 series tv)

    So back to the intel cpu... I am just missing some point or it is not that demanding feature so in my opinion it can be maybe a price(ing)* constrain.
  • Mikzip - Tuesday, December 26, 2017 - link

    Is it possible to get HDR out by means of USB C to HDMI adaptor, my HDMI port is only 1.4
  • Kevin G - Wednesday, December 27, 2017 - link

    Depends on the system but most USB-C ports that can provide video do so natively by DisplayPort and then convert that over to HDMI. So HDR output is possible because DP supports it but the DP to HDMI conversion chip plays a roll here too.

    So the short answer is yes but it may not be possible with all adapters.
  • Mikzip - Wednesday, December 27, 2017 - link

    Do you know of any such adapter, the only one i have been able to lokate with HDR are only for the MacBook, and my USB C port don't have Thunderbolt
  • Kevin G - Wednesday, December 27, 2017 - link

    Not off hand that'd be guaranteed to work. Even if an adapter doesn't immediately work, you could try editing the system's EDID table to expose 10 bit color etc. and see what gets passed through. I strongly recommend this testing with a display that accepts HDR via both DP and HDMI so you could compare the results with and with the adapter as a factor.
  • Mikzip - Wednesday, December 27, 2017 - link

    I was trying to hook it up to my HDR TV LGB6, all HDMI inputs accept HDR. Editing EDID table are a little out of my league I'm afraid ;-)
  • harshw - Tuesday, December 26, 2017 - link

    The BIOS ver for the ASRock Beebox 7200-S is shown as 1.73. The version available for download from the website is 1.60. Was the 1.73 ver also a beta?

    And any idea of what the LSPCon version was? 1.66?

    It's sad that the Intel HD graphics cannot do YCbCr 4:2:2 ...
  • Nestoritwiz - Tuesday, December 26, 2017 - link

    Budget??
    Don't get me wrong I applaud your choices any of that stuff which I would love to own and it's a combination is a whole oh my God I'd be so happy.
    But if the goal was to be on a budget or last three to five years without being update outdated then why would you use a DVD player of any kind three to five years come on we all know streaming is future DVDs are like VHS. Nvidia shield on sale for 149, T5 Samsung hard drive or some equivalent hundred bucks or less, ajisen air mouse remote 25 bucks. Get your home theater system 2 to 300. And you're good to go. Thank you for allowing me to express my thoughts I just think you missed the mark a little bit.
    Happy holidays
    Stephen

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