---
product_id: 372992399
title: "SiliconDust HDHomeRun Flex 4K ATSC 3.0 NextGen TV: 2/4 Tuners HDFX-4K"
brand: "silicondust"
price: "S$548"
currency: SGD
in_stock: true
reviews_count: 5
category: "Silicon Dust"
url: https://www.desertcart.sg/products/372992399-silicondust-hdhomerun-flex-4k-atsc-3-0-nextgen-tv-2
store_origin: SG
region: Singapore
---

# USB HDD support for whole-home DVR (paid guide required) 4 tuners (2 ATSC 3.0 + 4 ATSC 1.0) for seamless multi-streaming WiFi & wired network streaming across multiple devices SiliconDust HDHomeRun Flex 4K ATSC 3.0 NextGen TV: 2/4 Tuners HDFX-4K

**Brand:** silicondust
**Price:** S$548
**Availability:** ✅ In Stock

## Summary

> 📺 Unlock the future of free TV—4K, multi-room, and totally next-gen!

## Quick Answers

- **What is this?** SiliconDust HDHomeRun Flex 4K ATSC 3.0 NextGen TV: 2/4 Tuners HDFX-4K by silicondust
- **How much does it cost?** S$548 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/372992399-silicondust-hdhomerun-flex-4k-atsc-3-0-nextgen-tv-2)

## Best For

- silicondust enthusiasts

## Why This Product

- Trusted silicondust brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **NextGen TV Ready:** Experience crystal-clear 4K and future-proof your home entertainment with ATSC 3.0 compatibility.
- • **Plug & Play Setup:** Simple wired Ethernet connection and quick app setup get you watching in minutes—no tech headaches.
- • **Multi-Device Streaming:** Stream live TV simultaneously on Android, AppleTV, Roku, Xbox, and more—anywhere in your home network.
- • **Seamless Plex Integration:** Effortlessly pair with Plex Media Server for remote access and a unified streaming experience.
- • **Whole-Home DVR Flexibility:** Connect your USB hard drive to unlock full DVR capabilities and never miss a moment of your favorite shows.

## Overview

The HDHomeRun Flex 4K HDFX-4K is a cutting-edge network TV tuner supporting both ATSC 3.0 and 1.0 broadcasts. With 4 tuners, USB DVR support, and compatibility across major streaming devices, it delivers 4K live TV streaming and whole-home DVR functionality over your existing network. Perfect for professionals seeking a future-proof, multi-device TV solution with seamless Plex integration and easy setup.

## Description

ATSC 3.0 NextGenTV is here! Receive and watch free to air ATSC 3.0 and ATSC 1.0 TV on a wide range of devices anywhere in your home over your existing Wifi or wired network. All the features of the HDHomeRun CONNECT QUATRO or 4K plus USB for connecting a hard drive (optional). Supports 4K content where available. If ATSC 3.0 is not yet available in your area the HDHomeRun FLEX 4K will use ATSC 1.0. Future proof your TV experience!

Review: This is kind of lengthy... Previously, for the past 6 years, our household used a “Tablo” as our in-home OTA DVR solution. For that purpose, it worked fairly well. I won’t go into any of the downsides, but the final deal killer was the inability to access it remotely using Roku devices. No matter how many router tweaks and settings such as port forwarding I tried, Roku just couldn’t access it. The only thing that worked was using a smartphone. All we wanted was the ability to access our local news broadcasts and sporting events when out of town. We thought we had found a solution by subscribing to “YouTube TV” which provides local channels as part of the package. Imagine our disappointment when on our first trip out of town, we could not get any of our hometown stations but instead those of where we were at the time. Upon our return, I resolved to finally replace the “Tablo” with a SiliconDust “HDHomeRun Flex 4K”. Operationally, much like the “Tablo”, you connect an OTA antenna to the unit, connect to your home network and then power it up. One of the nice things about the “Tablo” is that you can connect to your home network wirelessly. The “HDHomeRun” requires a wired ethernet connection. This meant we would have to run ethernet cable from our router to where the unit would reside. Fortunately for us this was something we did last year for different reasons but in the process, the “Tablo” was connected directly as well which greatly improved its responsiveness and stability. Unboxing the “HDHomeRun” and connecting it in place of the “Tablo” took only a few minutes. I used the “HDHomeRun” app on my android phone while connected to the same network to finish up firmware upgrades and channel scans. The “HDHomeRun”, when connected to our attic antenna, picked up 52 local ATSC 1.0 channels and 4 ATSC 3.0 stations. Now, the main reason we selected the “HDHomeRun” was its ability to integrate with our “Plex Media Server” which we have had operating for years. Within just minutes, the “HDHomeRun” was setup within Plex which, as part of our lifetime pass, provides a guide for all of the channels the “HDHomeRun” found. Plex also provides native DVR support so no additional storage devices or fees to SiliconDust for their DVR functionality. What Plex won’t do is decode AC-4 audio (blame FFmpeg) which is what the ATSC 3.0 broadcasts come with. Not a huge problem since all of the ATSC 1.0 audio channels work just fine. We anticipate that Plex/FFmpeg will provide the AC-4 decoder eventually as ATSC 3.0 adoption picks up, but the main thing is, since Plex is a server, we can access it remotely which means all of our local channels are available remotely as well. “HDHomeRun” also has a Windows 10 app which was downloaded to test. That worked great and after downloading a couple of drivers it said it needed, including a 99 cent one from Microsoft, I was able to play the ATSC 3.0 channels with audio as well. Some users have complained about channel changes taking a long time. For us this is 2-3 seconds. I challenge anyone to go from one YouTube or Roku channel to another much faster. All in all, to date, this change over has worked out well. It picks up all of the local free channels we could ever need. Subjectively, we also think the image quality is great. If I had a wish list, it would be that the “HDHomeRun” apps provided more native info and/or metadata about each channel such as the kind of audio track being listened to and the video resolution. Kind of like YouTube providing “Stats for Nerds” on each of its videos. We’re not sure if we are future proofed on the ATSC 3.0 roll-out but that was not the only or even main part of the reason for our purchase decision. What we wanted is what we got, and it works very, very well.
Review: I had a couple of older, used HD Homerun (HDHR3-US) units in the house, and moved up after I got my large antenna up. This is more sensitive despite having four tuners instead of two, and it does pick up non-DRM'ed ATSC 3 channels well. Bummed about DRM not working, but it's really not the fault of SiliconDust, and I expect the FCC to help with all of that soon. I'm running this from a Channels DVR setup, Plex is also compatible, and the HDHR software works, too. Just remember that you need some kind of software to access it - someone was upset it didn't have HDMI, which is kind of the point of a unit like this. You put it where the OTA signal is good and just need to wire it to Ethernet.

## Features

- NextGen TV certified - watch live TV on multiple devices simultaneously throughout your home with our Multi room Multi user network tuner solution
- Full whole-home DVR by connecting a USB hard drive (requires paid TV guide for DVR record)
- ATSC 1.0 content is compatible with Android, FireTV, AppleTV, Roku, Sony, XBox, iPhone, iPad, Win10/11, Mac
- ATSC 3.0 DRM-free content is compatible with Android, FireTV, AppleTV, Roku Ultra 4800X and newer, iPhone, iPad, Win 10/11, Mac. Not compatible with DRM protected channels
- 4 tuners (2 ATSC 3.0, all 4 ATSC 1.0)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B092GCN9NL |
| Best Sellers Rank | #105,653 in Computers ( See Top 100 in Computers ) #65 in External TV Tuners & Video Capture Cards |
| Item model number | HDFX-4K |
| Manufacturer | Silicondust USA Inc |
| Product Dimensions | 17.78 x 12.7 x 5.59 cm; 18 g |

## Product Details

- **Brand:** SiliconDust
- **Compatible devices:** Xbox, Roku, AppleTV, iPhone, iPad, Windows 10/11, Mac, Android, FireTV, Sony, LG devices
- **Connectivity technology:** Ethernet
- **Connector type:** USB
- **Product dimensions:** 17.8L x 12.7W x 5.6H centimeters

## Images

![SiliconDust HDHomeRun Flex 4K ATSC 3.0 NextGen TV: 2/4 Tuners HDFX-4K - Image 1](https://m.media-amazon.com/images/I/51qE-u4zsLL.jpg)

## Questions & Answers

**Q: All i want is to watch ota atsc 3.0 will this work for that purpose? local station is going atsc 3.0**
A: 2 of the 4 tuners support atsc 3.0 (HEVC video format and AC-4 audio codec).   all 4 tuners work with atsc 1.0, IE current HD broadcasts (MPEG-2 video and AAC audio) so you can use lots of player apps for 1.0 (Plex Emby etc. that most smart TVs or Firesticks Rokus etc. are able to provide.    But You can only watch up to 2 simultaneous 3.0 channels (or can record 2 atsc 3.0 channels if you are using the DVR feature of the HDHomeruns)   A few of the very newest (typically OLED) TV's are able to be directly compatible to play this back (the AC-4 audio which is a Dolby format that is NOT commonly supported yet) or as others are noting, you can tune to and play the 3.0 broadcasts on most of the HD Homerun apps on some (not all) devices.   NVIDIA shield probably the best bet.   Interestingly the Channels App downloaded with NVidia sheield or several NAS (network attached storage) devices that support that application can now record/playback the format and handle the audio as well.

**Q: What is the difference between this flex model and the hdhr5-4k?**
A: The FLEX 4K is a CONNECT 4K with a USB port for optionally connecting a hard drive. With no hard drive plugged in it works exactly the same as a CONNECT 4K.

**Q: What codec is the content streamed in?**
A: There is at least one streaming player that supports AC-4 audio, the Roku Ultra 4800. It has to be the 4800 model, as that is the only Roku that supports AC-4 audio.

**Q: I have a 1 tb hdd, 3 non-smart tvs with firestick, 3 avr audio systems with hdmi, and 100+ gb/s wifi. what else do i need to make this work?**
A: You need 1) an over the air (OTA) antenna, 2) an ethernet cable to connect the HDHRun to your router or ethernet switch (no WiFi), and 3) Your hard drive needs to be connected to same home network if you intend to use it to DVR OTA TV programs. Keep in mind the HDHRun is an internet dependent system.  If your internet goes out, the HDHRun unit won’t work at all.  I have both the Tablo dual, and an HDHR 4k flex unit. I prefer the Tablo since I can watch live and recorded TV while the internet is down (home network must be running though). You also connect your hard drive directly to the Tablo via USB, and it can use either WiFi or ethernet hardwire to connect to the app. The Tablo app you download from the app store will find and connect to it - same as the HDHR appa. I haven’t tried AirTV yet. It looks promising, and will interlace the OTA broadcast with Sling.  
The HDHR is a good quality device, but has several aspects I find annoying.
1) I already mentioned that it MUST be connected to the internet before the home screen will come up. 
2) Hardwire ONLY connection to your home network.  3) Access to the channel scan utility is not within the app. You access the channel utility through the device’s IP address.
4) You have to pay Silicon dust a subscription ($30/yr) to use the DVR function.  Tablo only requires a subscription to get a 2 week grid guide - else you only get 24 hours look ahead. 
Hope this helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***N on 11 July 2022*

This is kind of lengthy... Previously, for the past 6 years, our household used a “Tablo” as our in-home OTA DVR solution. For that purpose, it worked fairly well. I won’t go into any of the downsides, but the final deal killer was the inability to access it remotely using Roku devices. No matter how many router tweaks and settings such as port forwarding I tried, Roku just couldn’t access it. The only thing that worked was using a smartphone. All we wanted was the ability to access our local news broadcasts and sporting events when out of town. We thought we had found a solution by subscribing to “YouTube TV” which provides local channels as part of the package. Imagine our disappointment when on our first trip out of town, we could not get any of our hometown stations but instead those of where we were at the time. Upon our return, I resolved to finally replace the “Tablo” with a SiliconDust “HDHomeRun Flex 4K”. Operationally, much like the “Tablo”, you connect an OTA antenna to the unit, connect to your home network and then power it up. One of the nice things about the “Tablo” is that you can connect to your home network wirelessly. The “HDHomeRun” requires a wired ethernet connection. This meant we would have to run ethernet cable from our router to where the unit would reside. Fortunately for us this was something we did last year for different reasons but in the process, the “Tablo” was connected directly as well which greatly improved its responsiveness and stability. Unboxing the “HDHomeRun” and connecting it in place of the “Tablo” took only a few minutes. I used the “HDHomeRun” app on my android phone while connected to the same network to finish up firmware upgrades and channel scans. The “HDHomeRun”, when connected to our attic antenna, picked up 52 local ATSC 1.0 channels and 4 ATSC 3.0 stations. Now, the main reason we selected the “HDHomeRun” was its ability to integrate with our “Plex Media Server” which we have had operating for years. Within just minutes, the “HDHomeRun” was setup within Plex which, as part of our lifetime pass, provides a guide for all of the channels the “HDHomeRun” found. Plex also provides native DVR support so no additional storage devices or fees to SiliconDust for their DVR functionality. What Plex won’t do is decode AC-4 audio (blame FFmpeg) which is what the ATSC 3.0 broadcasts come with. Not a huge problem since all of the ATSC 1.0 audio channels work just fine. We anticipate that Plex/FFmpeg will provide the AC-4 decoder eventually as ATSC 3.0 adoption picks up, but the main thing is, since Plex is a server, we can access it remotely which means all of our local channels are available remotely as well. “HDHomeRun” also has a Windows 10 app which was downloaded to test. That worked great and after downloading a couple of drivers it said it needed, including a 99 cent one from Microsoft, I was able to play the ATSC 3.0 channels with audio as well. Some users have complained about channel changes taking a long time. For us this is 2-3 seconds. I challenge anyone to go from one YouTube or Roku channel to another much faster. All in all, to date, this change over has worked out well. It picks up all of the local free channels we could ever need. Subjectively, we also think the image quality is great. If I had a wish list, it would be that the “HDHomeRun” apps provided more native info and/or metadata about each channel such as the kind of audio track being listened to and the video resolution. Kind of like YouTube providing “Stats for Nerds” on each of its videos. We’re not sure if we are future proofed on the ATSC 3.0 roll-out but that was not the only or even main part of the reason for our purchase decision. What we wanted is what we got, and it works very, very well.

### ⭐⭐⭐⭐⭐ Review
*by R***W on 10 February 2026*

I had a couple of older, used HD Homerun (HDHR3-US) units in the house, and moved up after I got my large antenna up. This is more sensitive despite having four tuners instead of two, and it does pick up non-DRM'ed ATSC 3 channels well. Bummed about DRM not working, but it's really not the fault of SiliconDust, and I expect the FCC to help with all of that soon. I'm running this from a Channels DVR setup, Plex is also compatible, and the HDHR software works, too. Just remember that you need some kind of software to access it - someone was upset it didn't have HDMI, which is kind of the point of a unit like this. You put it where the OTA signal is good and just need to wire it to Ethernet.

### ⭐⭐⭐⭐ Review
*by W***D on 3 June 2024*

I purchased a HDHomeRun Flex 4K in anticipation of dropping cable TV. I found that we tend to watch a lot of network shows on the DVR and have Fire Sticks on every TV, so being able to record over the air TV could save us a lot of money over cable without having to buy a lot of hardware. Setting up the HDHomeRun Flex 4K was easy and strait forward. Initially I connected an external hard drive to it and purchased a subscription to the DVR service. Unfortunately I found using this device as a DVR was significantly less pleasurable than using my Xfinity DVR. While the picture quality of live broadcasts looked very good, recorded shows did not. As a trial run I recorded CBS Sunday Morning off my local CBS station. The Flex 4K reported signal strength, signal quality, and symbol quality all at 100%. Playing back the recording the picture quality lacked resolution and color depth. Additionally several times while I was fast forwarding through commercials I got an error message and lost playback. When I went back to recordings it displayed "Your HDHomeRun DVR is ready to record" with no recordings. I finally gave up on using the HDHomeRun Flex 4K as a DVR and purchased an inexpensive mini PC that I set up as a Channels DVR with the HDHomeRun Flex 4K as the tuner. This has worked out extremely well. Channels DVR records at the same quality as watching off the air, has a clean interface, has great commercial skip capability, and the HDHomeRun Flex 4K integrates perfectly as the tuner. The Channels DVR service is more expensive than the SiliconDust DVR service, but it's worth it, and it's still a substantial savings over Cable TV with DVR service.

## Frequently Bought Together

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- Antennas Direct ClearStream 2V Indoor Outdoor TV Antenna UHF VHF Multi-Directional, 60+ Mile Range, 4K 8K UHD, NEXTGEN TV – w/Reflector, 20-inch Mast

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-05*