There's pretty much no other switch I could find, even paying way more, that supported 4K@144Hz with VRR and HDR. I tried a few that advertised such capabilities, but they didn't work.

This switch seems to not be doing something quite right; sometimes when I switch inputs between PCs, the PC I'm switching to doesn't detect a monitor being "plugged in." As a result, sometimes I have to switch more than once or power cycle the switch. There's no way to update the firmware, so that bug can't be fixed.

I would happily buy an upgraded version of this with EDID emulation, even if it was 3-4 times the price, since it would solve that.

Device works as intended but for your information it does not pass ATMOS and Dolby Vision. I tested it with hdr10 and hdr10+ and that works. Use the shortest HDMI cables possible with 2.1 version. The device sometimes cuts out so you have to turn it off and back on. Generally works just turning off power from remote and turning it back on. The frequency hz switch inside is buggy. It does pass hd audio format 7.1 via PCM (Dolby hd, dts hd ma etc). I'm keeping it because I like the build quality and it generally works for what I need. Passing HD audio from older audio systems that I still enjoy using. Hope this helps.

Overall I would give this an 85 out of 100. Has some quirks, but it does the job.

I have an older Yamaha 7.1 AVR that only supports 1080p (even on pass-through mode) while I have a 4k TV that is connected to my computer. In the past I would run two 50 ft hdmi from pc, one to tv, one to avr. This product let me remove one of those cable from the equation.

The quirks. On a rare occasion of my pc monitor is on while booting the computer, with the display set to tv it did not show an image. I use Windows key + P to move between monitor and TV outputs. That fixes it.

My TV supports 1440/120 (true 120hz) or 4k/60. Using CRU and setting a 4:2:0 chroma 4k/120 resolution I'm able to get 4k @ 120hz without HDR. With everything hooked up to this box the audio wasn't playing. I had to run CRU with only the video connected, not the audio hdmi. Once I set settings, saved, and reset I plugged the audio cable back in and was able to get 5.1/7.1 surround again.

So as of July-ish 2020, AppleTV first gen dropped HBOGo / Now apps, Tivo did the same (also previously dropped Xfinity on-demand), and even though I pay for HBO through my provider (Xfinity) I had no way to watch on-demand HBO on my nice big TV. Yes, screen mirroring from the new HBOMax app to the old AppleTV works, but who wants to open an app, select content, and control their tv from an ipad or iphone? We just didn't enjoy that experience. After checking out other streaming box options, each of which had one drawback or another, I bit the bullet and bought an AppleTV 4K 32gb - but had to find a solution for its lack of an spdif output. Without that, I'd have no soundbar / sub, and although the TV has great add-on speakers - it's an old Pioneer plasma - I still wanted to see if I could find something that would work.

Found this avedio box and my problem was solved. Connected its HDMI output to the Pioneer, fed the Tivo and new AppleTV (with no spdif) HDMI to the inputs, and lastly connected the avedio's spdif output to the soundbar spdif input. Everything worked as expected, and as a side bonus, we don't have to scroll through input selection on the tv since we're only using 1 HDMI on the Pioneer, and don't have to fiddle with the soundbar's audio delay settings any longer. So far - about a week - the avedio unit has been working well. It switches between sources and delivers proper video output resolution to the plasma, and audio to the soundbar. Nice to have the center channel / simulated 5.1 + subwoofer with the AppleTV. The Tivo has spdif out, but we're not using that since installing the avedio unit as it's not needed - Tivo and AppleTV audio both ride HDMI to the avedio splitter.

2 gripes. 1 - the remote is not the best, though it is functional - we have to get within about 6-8 feet of the unit to switch sources. 2 - the red power and source leds are realllly bright. Some electrical tape solved the light issue, but I guess we'll have to live with - ugh - getting up off the couch to switch sources. Anyways, this avedio unit does what it's supposed to, and also has other output options if you need 3.5mm (headphone, PC speakers) audio out, plus it also supports RCA / coax, which should work with older style AV receivers. Overall a nice device that should help folks with 2 HDMI output devices feed their TV and audio systems conveniently.

EDIT and UPDATE: 04/21 - finally realized changing the battery in the remote might help, and voila, it works from across the room ~15 feet. It had a CR2025, I replaced it with a CR2032 which fit just fine. As can be expected from a technical person like myself, the last thing I changed or checked was the simplest, and fixed the remote "problem". I've switched over to a new sub / center channel setup courtesy of a friend (free! Sony DVD player w/multichannel 5+1 and spdif input but we're only using the center and sub + the TV speakers). It works great. Every now and then I have to go into the dvd player audio sync setup and adjust the delay, but that only seems to be required after a power outage or brownout. Things seem to get wonky after those. Still recommend this setup for people whose gear meets this use case.

I was confused by many of the reviews for this extractor, but I bought it anyway. It's a rare combination of manufacturer claims and features. Those that I have tested are true:

-simultaneously outputs digital audio (coax and optical) and passes through hdmi WITH AUDIO

-works with hdmi 2.0

I am not using the hdmi switch or the analog outputs.

I can only speak for my unit, but contrary to other reviews:

- it has not gotten hot after 5 hours of use
- the digital audio signal is totally clean...I'm a/b ing it with another output from the same source through the same dac and I can't hear a difference

These facts aside, I feel like this is the magical solution to a problem that I had already given up on. As a practical audiophile, I listen to only records and music streamed from my devices over airplay to an Apple TV. Everything runs through an integrated amp with a solid built in dac.
But the pandemic drove me to hook a tv up to my stereo system and wreck my input game. The tv took my optical input and because I want to listen to streaming without having to turn the tv on (meaning I would have to use coax digital in) I had decided that the only real solution was a separate streamer... and the only one with the right features and quality was the amazing bluesound node 2i. Without getting too deep into it, airplay streams at a relatively low sample rate and a component like that is overkill but, again, the only apparent solution...until now!

After a couple nights of visualizing, I just ordered this and set it up. Hdmi from the Apple TV to the box. Hdmi from the box to the tv. Coax digital from the box to the digital in on the integrated amp.
Everything worked right away and it's easy to test because the tv is hooked up to the same amp via optical.

A couple notes:
-I'm only using a stereo dac so I can't speak to multichannel
-there were audio dropouts coming from the tv at first, but I went back through the tv menus and reset the optical output and then it was fine. I wish I could be more specific but this new Samsung has been not so great with the audio settings.
-for testing the sound quality I hooked up a Gen 2 Apple TV that has hdmi and optical outputs. Running hdmi through this thing to coax sounds to my ears on my system the same as optical straight out of the Apple TV.
-let's be real...it's amazing how well it works but it is cheap: probably best not to plug cables in and and out too much and it has blinding red led lights on the front.
-I don't intend to use the weird little remote but it's there.

Right now I can stream music to the Apple TV from my phone with the tv off, or watch tv in 4K using the same Apple TV and the same speakers. And without buying a $500 streaming box or a dumpy receiver!

It seems like it should have been simple, but I think this is one of the few, one of the best, and certainly one of the most cost effective solutions.

I'll be back to let you know if it breaks, but this is one of my all time biggest wins so far.

Thanks for building it Avedio!