SiliconDust HDHomeRun Flex 4K ATSC 3.0 NextGen TV: 2/4 Tuners HDFX-4K

The Silicondust HDHomeRun Flex 4K (HDFX-4K) is a multi-room network tuner that delivers live over-the-air television to multiple connected screens across your home. Designed for cord-cutters and households with varied viewing habits, it eliminates the need to run separate antenna cables to every television set.

Equipped with four internal tuners, the device supports simultaneous watching on different devices. All four tuners process standard ATSC 1.0 broadcasts, while two also handle NextGen TV ATSC 3.0 signals. Broad platform support covers Android, AppleTV, FireTV, Roku, Sony, Xbox, iPhone, iPad, Windows 10/11, and Mac for ATSC 1.0 content.

For recording, connecting an external USB hard drive turns the box into a whole-home DVR without requiring a recurring subscription. While basic DVR functionality works out of the box, an optional paid TV guide is available if you want advanced auto-recording tools.

Keep in mind that ATSC 3.0 playback is strictly limited to DRM-free content and will not work with DRM-protected channels. Additionally, Roku support for ATSC 3.0 is limited to the Roku Ultra 4800X and newer models.

Verdict: The HDHomeRun Flex 4K is an ideal choice for multi-user households wanting flexible live TV streaming and local DVR recording across phones, streaming sticks, and computers. Buyers looking to access encrypted ATSC 3.0 channels, however, should take note of its DRM limitations.

A great fit if you:

• Want to share live antenna television across phones, streaming players, and computers over your home network
• Need multiple tuners so several household members can watch different channels at the same time
• Prefer recording broadcast TV to your own USB drive without mandatory monthly subscription fees

Consider something else if you:

• Need to receive and watch DRM-protected ATSC 3.0 broadcasts
• Use older Roku hardware prior to the Ultra 4800X model for NextGen TV playback

How many tuners does the HDHomeRun Flex 4K include?
It features four total tuners. All four receive ATSC 1.0 signals, and two of those four tuners also support ATSC 3.0 NextGen TV broadcasts.

Do I need to pay a subscription to record TV?
No, full whole-home DVR functionality requires no subscription when you attach a USB hard drive. However, a paid TV guide service is available if you want advanced auto-record features.

Does it support DRM-protected ATSC 3.0 channels?
No, the tuner is only compatible with ATSC 3.0 DRM-free content and is not compatible with DRM-protected channels.