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Overview

The HDHomeRun Flex 4K brings the future of live TV to your home with ATSC 3.0 NextGen TV support, delivering crisp 4K picture quality and multi-device streaming. Perfect for cord-cutters, it lets you watch and record over-the-air channels anywhere in your home through your smart devices or TV apps.

SiliconDust HDHomeRun Flex 4K ATSC 3.0 NextGen TV Tuner – HDFX-4K(CA), 4K UHD, 2/4 Tuners, Multi-Device Streaming, DVR Compatible, Over-the-Air Live TV for Smart TVs & Apps

Model: First-step-11
Web Code: 19645558
Sold and shipped by | 3.0 seller rating (4 reviews)

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

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Seller Return Policy

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Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

Experience TV like never before with the SiliconDust HDHomeRun Flex 4K ATSC 3.0 NextGen TV Tuner, designed for users who want flexibility, premium picture quality, and multi-device streaming. Featuring support for ATSC 3.0 NextGen TV, this tuner unlocks 4K UHD broadcasts (where available), richer audio, improved reception, and next-generation interactive features.

With 2 ATSC 3.0/1.0 hybrid tuners and 2 ATSC 1.0 tuners (4 total), the Flex 4K allows you to watch, pause, and record multiple channels simultaneously. Whether you're streaming live sports in 4K, recording your favorite shows, or watching news in another room, this tuner ensures every device gets smooth, buffer-free playback.

📡 Stream Live TV on Any Device

The Flex 4K connects to your home network so you can watch live TV through the HDHomeRun app on:

Smart TVs (Samsung, LG, Android TV)

Streaming devices (Fire TV, Roku*, Apple TV*)

Smartphones & tablets

Windows, Mac, and Linux PCs

(*via Plex, Channels DVR, or third-party apps)

No more coax cables running through your home—just connect the antenna, plug into your router, and stream anywhere.

🎥 DVR Ready for Whole-Home Recording

Pair it with HDHomeRun DVR service, Plex DVR, Channels DVR, or other compatible software to build a powerful whole-home recording system. Record live TV, access your library from any device, and never miss a moment.

🔍 Advanced ATSC 3.0 Features

ATSC 3.0 enables:

4K UHD resolution (where available)

Enhanced signal reception

Better audio quality

Future-proof broadcast technology

Perfect for users wanting the best over-the-air TV experience.

⭐ Key Features

ATSC 3.0 NextGen TV + ATSC 1.0 Support

4 Tuners: 2 hybrid ATSC 3.0/1.0 + 2 ATSC 1.0

Multi-device, whole-home streaming

DVR ready (HDHomeRun, Plex, Channels, Emby)

4K UHD output where supported

Easy antenna + router setup

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Product Condition
Brand New

Inputs/Outputs

Internal or External
External

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.