TCL 50S451 4-Series 50-Inch 4K Roku Smart TV
- 50 inch screen, 49.5 inch viewable display
- 4K UHD resolution on an LED panel
- 60 Hz refresh rate, 16:9 aspect ratio
- HDR10 and HLG high dynamic range formats
- Roku TV platform with thousands of streaming channels
- 4 HDMI inputs, one with eARC
- Dual-band WiFi and Ethernet port
- 200 x 200 mm VESA for wall mounting
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A smart 4K set for a room where streaming apps and over-the-air channels both matter. Its panel is LED at a standard refresh rate, so it favors everyday viewing over fast action.
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ASIN: B0BYR8GQQSModel: 50S451Category: TVs
Overview
Mounting this set on a wall or setting it on furniture both work, since the stand is included and the back carries a standard bolt pattern. The Roku platform runs the apps, the tuner pulls in free over-the-air channels, and the remote or your voice handles the rest. Four HDMI inputs cover a cable box, a console, and a soundbar at the same time.
Buyers who want one screen to gather streaming apps, an antenna, and a game console get all of that without adding a separate streaming stick. The picture is a standard LED panel with HDR support rather than a high refresh display, so motion during sports and fast games is where it gives ground. Voice control and AirPlay cover the phone and speaker side of the setup.
Who it's for
Households cutting the cord while keeping an antenna and a couple of HDMI devices benefit from the built-in platform and tuner. Shoppers chasing the smoothest motion for games or live sports should look at a set built for that instead.
Pros and cons
- Four HDMI inputs, one with eARC
- Roku platform built in, no streaming stick
- Voice control through Siri, Alexa, Google
- AirPlay sends phone video to the screen
- Refresh rate is 60 Hz
- No mini-LED or full-array dimming listed
- HDR limited to HDR10 and HLG
- Contrast ratio listed only as at least 1000:1
Performance notes
Picture quality tracks the panel type and the HDR formats the source sends, so a 4K HDR stream looks its best while upscaled cable content depends on the tuner and processing. Motion clarity follows the refresh rate, which suits regular shows and slower games more than fast action. The Roku platform refreshes apps on its own, and voice search reaches across the channels you have installed.
Specifications
| Brand | TCL |
|---|---|
| Model | 50S451 |
| Dimensions & fit | |
| Screen Size | 50 inches |
| Weight | 18.5 pounds |
| Dimensions | 10.1 × 43.8 × 27.1 inches |
| Dimensions | 10.1 x 43.8 x 27.1 in |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Connectivity | Ethernet |
| Other details | |
| Resolution | 4K |
| Display Tech | LED |
| Brand Tech | TCL |
| Smart Platform | Roku |
Frequently asked questions
Does the TCL 50S451 work with a cable box and an antenna at the same time?
Yes. The set has an ATSC tuner for over-the-air channels plus four HDMI inputs, so a cable box, a console, and a soundbar can all stay connected while the antenna feeds the Live TV Channel Guide.
Can I mount the TCL 50S451 on a wall?
The back uses a 200 x 200 mm VESA pattern and the set weighs 18.1 pounds without the stand. A mount that matches that pattern and rating is needed, and one is not included.
Does the TCL 50S451 support AirPlay from an iPhone?
AirPlay is listed for sharing videos, photos, and music from an Apple device to the screen. Voice control also works with Siri alongside Alexa and Hey Google.
What refresh rate does the TCL 50S451 run at?
The panel is listed at 60 Hz, which covers regular shows, movies, and slower games. Fast sports and competitive gaming ask more of a display than this one provides.
Can I listen through headphones instead of the TV speakers?
The free Roku mobile app turns a phone into a remote and plays the TV audio through headphones connected to that phone, which keeps the room quiet. A headphones jack is also listed among the connectors.