This is by far the best TV Tuner out there. Living close to an airport I've always had problems with multi-path interference from low flying aircraft or windblown trees so after learning about the how the new ATSC 3.0 tuners worked to alleviate these problems, I jumped at the chance to try the HD Homerun Flex 4k. It's true. The 3.0 tuners have alleviated the problem. But the thing with the Flex is the ATSC 1.0 tuners do a pretty darn good job of alleviating the problem as well. My Tv's tuner is terrible. I get breakups all the time on it. I had a Tablo that did a little better, but I hated how it took 5 seconds to change channels. I also had a Fire TV recast and its tuners were ok, but it downscaled the picture and the PQ was pretty bad. You could change channels faster, but it took a few seconds for the picture quality to get up to HD. The Tablo and Recast PQ had a compressed look to it.

The HD homerun Flex 4k blows them both out of the water. The PQ is the same as if you were getting it straight from the antenna. I use the HDHomerun app, and I see no compression whatsoever. It really is an awesome picture. Changing channels is fast. The 3.0 stations take a couple of seconds longer. Right now, I don't see a reason to use the 3.0 stations because the 1.0 tuners do a fine job. In Orlando we get all the major Networks in ATSC 3.0, though the NBC station has turned on encryption. Silicon Dust says an update will be forth coming to allow viewing of DRM encrypted channels, but this isn't something you can bank on. Right now, ATSC is up in the air. It may all go away so who knows. None of the stations are doing 4k, it's all 1080. Be that as it may, I'm really happy with the 1.0 tuners on this thing.

I use the HDHomerun app. People dis it all the time and use the Channels or Plex apps but those require a computer. I don't want to have a computer on. Plus, the Channels and Plex apps transcode and that can affect your PQ. The HDHomerun app does no transcoding. It's basically 4 tuners streamed wirelessly to your whole network. A decent router is required. If you can get 4k from your streaming apps you'll have no problem with this.

I signed up for the $35 a year DVR and guide service. Less than $3 a month. I stuck a 256gb micro-SD card into a Micro/USB adapter and it works great. The recorded quality is a whatever the tuner received. No compression.

If you use the HDHomerun app, go into setting and TURN OFF SLICE VIEW. Then you get the normal grid guide by hitting the up or down button. To close the guide hit the back button. People dis the app because of the slice view, which I admit looks pretty bad but it actually is great for touchscreens like a tablet or phone.

Setting up is easy peasy. You can do it all from inside the app. Here's a hint, don't delete channels. Just click on the ones you don't want by getting to the red X. If you delete them, when the homerun does a scan, it will add them again.

As you can tell I'm pretty happy with this product. I'm actually blown away. I could have gotten away with the 2-tuner dual flex for nearly half the price, but I got a $100 gift card from my employer so decided to put it towards this.

If you're buying this for 4k, the tuner can do 4k, but nobody is broadcasting it. You can't really blame that on Silicon Dust.

I've been a Silicon Dust HDHomeRun fan for quite a few years. I bought a HDHomrRun PRIME nine years ago to try leveraging my home network for TV distribution. Shortly after that I sent my cable box packing and relied only on the HDHomeRun along with Plex to pickup DVR duties. I did try out the HDHomeRun DVR when it first came out, even using the Kickstarter to get early access to it. However, in the end, I preferred the ease of use of Plex.

Over the next few years, I found that I was watching less and less TV, for a number of reasons. I scaled back my service to the point that I was eventually just getting the local channels. All I was using it for was the local news and an occasional show like American Ninja Warrior. It was becoming harder and harder to justify the cost. It was about $30/month plus another $6/month for the cable card as part of a TV and Internet bundle.

Fast forward to early 2023. While doing some tech upgrades in the house I found that I had an easy way to get a coax connection from my basement, where my entertainment center and most cable endpoints are, up to the attic. I decided to take the plunge, install an antenna in the attic, and then swap my HDHomeRun PRIME for a HDHomeRun FLEX 4K. Best decision ever!

The antenna I put in the attic is an Antennas Direct ClearStream 4V. This is a big antenna designed to pull in stations from a long way away. As it is, I'm only about five miles from the Washington DC stations, so this antenna was overkill. I didn't want to take any chances being that the antenna would be in an attic and the house across the street from me, in the direction of the transmission towers, is about twice as tall as my home. The antenna more than handled the situation and even picked up some stations I was not expecting, from Baltimore, that were not even in the beam width for how I had the antenna aimed.

Now, we get to the HDHomeRun. When I hooked it up, is spotted 90 channels! A few of them seem to be ghosts as they report a signal with no content. Of the 90, I could tune in 82 of the channels. Plex had a few more issues and only knew about 67 of the channels, but it got the ones I cared about along with dozens I really didn't care about.

For my usage, I could have got away with a HDHomeRun DUO, two tuners being one more than I typically need on a given day. However, I'm trying to future proof and wanted to be ready for ATSC 3.0 (aka, NextGen TV). The DC area is fortunate to have ATSC 3.0 signals for all the major networks. The FLEX had no trouble receiving these signals.

I've been able to fire up all four tuners at once using a combination of a computer, a phone, a tablet, and a Chromecast with Google TV. The HDHomeRun app runs on all of them. The app isn't perfect, but it works. The only thing I would ask for in the app is the ability to get technical details on the stream. The only way I've found to get that is to go to the web interface for the HDHomeRun and look at the tuner status.

Only two of the tuners support ATSC 3.0. That is good enough for a first generation product, especially since the ATSC 3.0 stations are only simulcasting the regular broadcast at this point. The FLEX 4K is smart enough to give preference to the non ATSC 3.0 tuners when tuning in an ATSC 1.0 signal, to keep the 3.0 tuners available if you need them.

As for handling the signals it receives, the FLEX does a great job. For the local stations, the image is rock solid all the time. The interface shows 100% across the board, so I would expect no less. The Baltimore stations were the biggest surprise. The ones I receive, come in about 56% power but the symbol quality still shows as 100% and the image has been stable for them as well. Oddly, there are some stations that are on the same towers as the ones I get that don't come in at all. WBAL, the NBC affiliate, is one of those. It is as if it isn't even there. I don't really care about the Baltimore stations, but this did leave my scratching my head.

No product is perfect, and there are a few things I think could be done a little bit better. The biggest one would be to send the signal from a single tuner to multiple destinations. If two users tune in the same station, it still takes up two of the four tuners. With four tuners available, this won't likely be an issue but it would be more efficient.

The only other thing I don't like about the FLEX 4K is the total lack of indicator lights. It is truly a black box and the only way to check the status on it is through the web interface. For contrast, my PRIME has a power light, cable connectivity light, and a separate light for each of the three tuners that come on when in use. You know what is going on with that box with a single glance.

To wrap it up, my HDHomeRun PRIME will be looking for a new home. My cable provider has lost a video customer, although I did up my Internet speed with some of the savings. I'm receiving more stations than I did via cable and can watch them anywhere in the house via either the HDHomeRun app or Plex's Live TV feature. Hopefully the HDHomeRun FLEX 4K will get to flex its muscle on some 4K content once the local broadcasters start providing it. Even while waiting for the next generation of TV, add me to the cord cutters club.

Plug this into your network, your working TV anntenna, download their app (Windows, Android, iOS), and boom! You've got access to all your local digital network channels. Here in Minnesota, broadcast is 1080p (not 4K), but the picture is still very good with this device. I use their Windows and their iOS app (iphone and iPad). It works very well. This device has 4 tuners, so 4 people can watch their own channel. I'm 50 miles south of most major broadcasting channels, and I still get around 45 channels free off the air. I put a rotatable TV Antenna in my attic (avoid the need for lightning arrestor), it's got an amp that boosts the signal, and I plug it directly into this device. Very happy with my purchase, and growing up having an original partial tube black and white CRT TV (internally the tuner alone was probably 8 times the size of this device), this small device (approx 4 x 4 x 1/3 inch) has 4 tuners! Where this really shines is downloading the app on your Apple TV (probably works with all other streamers too, not sure if it does), and boom, quick easy access to any of your local channels "free" (cost of device is not "free" of course). Highly recommended!

Easy to setup and since putting it in place I have downloaded several updates already for the product. I run the software on my Android phone, iPad ands Windows laptop. I also have a Plex server setup at home and have integrated Plex with the HD Homerun, I just have not setup to DVR anything yet. My biggest disappointment has been with the limited number of stations I can pickup. While not a function of this product, but rather antenna and area, it does relate to its usefulness. Websites will tell you what you should receive based on your location and type of antenna, I would say that is a best case scenario. In practice, on a perfect day I would get 80% of what the sites listed as far as stations and on an average day 50%. Many times multiple channels come from the same location so if you get a poor signal from just one of those further away stations you lose multiple channels.

A while back I purchased the two tuner version (the Duo) and an amplified antenna. That combination blew the other antennas and tuners I had clear out of the race. Quality was excellent! Since I'm setting up a media server and DVR that include code to directly support these devices (on a NAS), I ordered this 4 tuner version so that I could avoid recording / watching conflicts, and a total of 6 concurrent channels should be more than sufficient for my needs.

I plugged the box in and did their setup. Their software works just fine, but I couldn't find all the documentation I'd like on everything the various software options show/report. I've got an IT background so I figured it out, but a novice might have a little difficulty the first time 'round. Only a little. I'm only dinging a half-star on that, so I don't consider it that big of an issue.

What did happen, however, is that the 4 tuner unit seemed less sensitive. Where the antenna and 2 tuner combination got clear channels all the way down to 2.1 (CBS here in Chicagoland), the 4 tuner unit didn't "see" nearly as many channels as did the two tuner unit in the same location with the same antenna. I figured that the sensitivity of the 4 tuner unit was less than that of the 2 tuner unit. So, I got an identical antenna and set the 4 tuner unit up in a different location that should give me better signal strength, and the results were about the same, but it still did get most of the channels, and with the other tuners getting those low channels, I figured that I was set, as the media server knows what channels each of the 6 tuners sees, and selects an appropriate unit to either display live tv to the client, or to the DVR.

I decided, however, that it was a good test of their technical support, so I e-mailed them yesterday afternoon describing the setup and the conditions and the results. I got a reply within a couple of hours asking me to have the unit send in some diagnostic logs and the concise instructions on how to do that. I did that straight away. A little while later, I got a reply and the techs told me that the unit was reporting signal overdrive and to try inserting an LTE filter in the chain between the antenna with the amplifier and the HomeRun. I did that, and gee... all of a sudden it "saw" the low-end channels it was missing. So, in reality, this unit had more sensitivity than the duo... and the added attenuation through the filter did the trick. I subsequently moved the antenna to a different location, and I get rock solid images on all the channels that I wanted available. I'd give their tech support 6 stars if I could. I have never had such rapid and concise tech support from a remote interaction. There was no fluff in their replies, just information, delivered in a courteous and professional manner.

Why was the unit getting overdriven? Well, one thing that was unclear to me was the fact that these units have their own built-in distribution amplifier. So it was amplifying an already amplified reasonably strong signal. Clearly, I would recommend these multiple tuner devices to anyone who is looking to receive OTA signals and dump them on their network. I'm elated with my choice.

...Darryl