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SiliconDust HDHomeRun FLEX DUO vs ADTH NextGen TV Box Gen 2

The HDHomeRun FLEX DUO is the superior choice for households that want to stream live TV to multiple devices like tablets, phones, and smart TVs over a home network. The ADTH NextGen TV Box is a dedicated single-room receiver designed for users who want to access 4K ATSC 3.0 broadcasts directly on one television via HDMI. While the HDHomeRun offers better multi-user flexibility, the ADTH box supports the newer NextGen TV standard and HDR video.

  • Choose the HDHomeRun FLEX DUO if you want to watch live antenna TV on any screen in your house using your existing Wi-Fi network.
  • Choose the ADTH NextGen TV Box if you want to receive 4K ATSC 3.0 broadcasts and connect directly to a single TV via HDMI.

Prices

  • SiliconDust HDHomeRun FLEX DUO: $109.99 at Walmart (checked today)
  • ADTH NextGen TV Box Gen 2: $159.99 at Amazon (checked today)
  • Difference: the SiliconDust HDHomeRun FLEX DUO is $50.00 cheaper than the ADTH NextGen TV Box Gen 2 today
SiliconDust
SiliconDust HDHomeRun FLEX DUO

SiliconDust HDHomeRun FLEX DUO

$109.99at WalmartChecked 10 h ago
See all prices and details
Visit Walmart
Pros
  • Works with Roku, Apple TV, and mobile devices
  • Dual tuners allow watching two different channels at once
  • No direct connection to TV required
  • Reliable Ethernet-based network streaming
Cons
  • Does not support 4K ATSC 3.0 signals
  • No HDMI output for direct TV connection
  • Requires a separate hard drive for DVR functions
ADTH
ADTH NextGen TV Box Gen 2

ADTH NextGen TV Box Gen 2

$159.99at AmazonChecked 10 h ago
See all prices and details
Visit Amazon

As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • Supports 4K and HDR NextGen TV broadcasts
  • Includes 64GB of internal storage for recording
  • Works with encrypted (DRM) ATSC 3.0 channels
  • Direct HDMI output for low-latency viewing
Cons
  • Limited to one TV screen at a time
  • Lower consumer reliability ratings
  • Requires HDMI cable management at the TV

What separates them

SiliconDust HDHomeRun FLEX DUOADTH NextGen TV Box Gen 2
Broadcast StandardATSC 1.0 onlyATSC 1.0 and ATSC 3.0 (NextGen TV)
Maximum Resolution1080p HD2160p (4K) with HDR
Connection MethodEthernet to router (Network based)HDMI to Television (Direct)
Multi-device SupportStreams to multiple devices simultaneouslySingle TV output via HDMI
Storage for DVRRequires external USB hard drive64GB built-in plus USB/SD expansion
Audio SupportStandard Digital AudioDolby Digital Plus with AC-4

Price history

  • SiliconDust HDHomeRun FLEX DUO: lowest $109.99 on Nov 11 at Walmart.
  • ADTH NextGen TV Box Gen 2: lowest $99.99 on Nov 11 at Walmart.

Prices at every store

SiliconDust HDHomeRun FLEX DUO

  • WalmartNew

    In stockSold by SilicondustReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $109.99Free shippingChecked 10 h ago
    Visit Walmart
  • Newegg.comNew

    In stockSold by Silicondust USA Inc

    $109.99Free shippingChecked 10 h ago
    Visit Newegg.com
  • eBayNew

    In stockSold by silicondustinc

    $109.99Free shippingChecked 10 h ago
    Visit eBay
  • eBayNew

    In stockShips from Canada · duties may apply

    $109.99Checked 11 h ago
    Visit eBay

Also available at

  • WalmartCheck price at Walmart

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All 5 stores and price history →

ADTH NextGen TV Box Gen 2

  • WalmartNew

    In stockSold by Solid Signal

    $159.99Free shippingChecked 11 h ago
    Visit Walmart
  • eBayNew

    In stockSold by solid_signal

    $159.99Free shippingChecked 11 h ago
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $159.99Free shippingChecked 10 h ago
    Visit Amazon
  • eBayNew

    Availability unknownSold by solid_signal (100% positive, 17,800 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $159.99Free shippingChecked 11 h ago
    Visit eBay

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All 7 stores and price history →

Specs compared

SpecSiliconDust HDHomeRun FLEX DUOADTH NextGen TV Box Gen 2
Maximum Resolution1080 (where available)2160p (4K)
Device TypeTuner—
SubtypeTV Tuner—
Input Signal TypeDigital (unencrypted cable TV), Digital (ATSC o…—
Recording FeaturesYes—
Tuner TypeATSC, ATSC 1.0—
Remote ControlNo—
Interface TypeEthernet—
PortsUSB (for hard drive), Ethernet—
Connector TypeEthernet, USB (for hard drive)—
Wireless ConnectivityWiFi—
Device CompatibilityAndroid, AppleTV, FireTV, Roku—
Show all 36 specsShow fewer specs
SpecSiliconDust HDHomeRun FLEX DUOADTH NextGen TV Box Gen 2
OS CompatibilityMac, Android—
Max Data Rate100BASE TX—
Power SourceAC Adapter—
Signal TypeDigital (unencrypted cable TV), Digital (ATSC o…—
Dimensions7 x 5 x 2.2 in—
Weight14 oz—
Colorblack—
Typical UsersMulti room Multi user network tuner solution—
TV tuner—Both ATSC 1.0 and ATSC 3.0 NEXTGEN TV
HDR

What reviewers say

SiliconDust HDHomeRun FLEX DUO

Owners of the FLEX DUO generally like it as a simple, low-maintenance way to get antenna TV onto every screen in the house, and the built-in DVR with a USB drive is a common selling point. Complaints center on the two-tuner limit, the lack of ATSC 3.0, and the dependence on a strong antenna signal and a solid network.

What people mention
  • SetupPraisedOwners say getting it on the network and scanning for channels is quick once the antenna is in place.
  • Tuner countCriticisedTwo tuners fill up fast when several people watch or record at once.
  • DVRPraisedRecording to a USB hard drive is a favorite feature and needs no subscription.
  • ReceptionMixedPicture quality and channel count depend on the antenna and signal strength, so results vary by location.

ADTH NextGen TV Box Gen 2

Owner feedback is largely negative, with a 2-out-of-5 average. Buyers report setup trouble and unreliable tuning more often than they praise picture quality.

What people mention
  • ReliabilityCriticisedOwners report dropouts and failed channel scans that make the box hard to rely on.
  • SetupCriticisedBuyers say initial setup and firmware updates are confusing and slow.
  • PicturePraisedWhen a channel locks in, owners describe a sharp 4K HDR image.
  • AntennaMixedThe box needs a separate antenna, and results vary a lot with signal strength.

Questions and answers

Which is better for a whole-home setup?
The HDHomeRun FLEX DUO is better because it sits near your router and sends the signal over your network to every device in the house. The ADTH box only works with the TV it is plugged into.
Can I watch 4K channels with these devices?
Only the ADTH NextGen TV Box supports ATSC 3.0, which is required for 4K over-the-air broadcasts. The HDHomeRun FLEX DUO is limited to 1080p ATSC 1.0 signals.
Do these require an internet connection?
The HDHomeRun requires a network connection to function. The ADTH box supports 'Unconnected DRM,' meaning it can decode encrypted channels without an active internet connection.
Is the ADTH box worth the step up for future-proofing?
Yes, if your local stations are switching to ATSC 3.0, the ADTH box is necessary to receive those signals. The HDHomeRun will eventually become obsolete as ATSC 1.0 is phased out.

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Buying guides that pick them

  • Best over-the-air TV tuners
  • Best external ATSC 3.0 tuner boxes
  • Best ATSC 3.0 NextGen TV tuners
—
High Dynamic Range (HDR)
Audio—Dolby Digital Plus with AC-4
DRM support—Unconnected DRM Support (No Internet Required)
DVR—DVR Capabilities
Expandable storage—SD Card and USB
Wi-Fi—Wi-Fi 5 – 802.11 b/g/n/a/ac 2.4GHz/5GHz
Bluetooth—Bluetooth 5.0
Power input—DC 12V
Video Output Quality—Up to 4K HDR
Recording Capability—64GB built-in storage with USB expansion
ATSC Standard Support—ATSC 3.0 + ATSC 1.0
Required External Antenna—Yes, required
Warranty Length—Not specified
Physical Form Factor—Compact tuner box for various installations
Additional Feature—64GB built-in storage included