Is this TV good for gaming?

Yes. It has a native 144Hz refresh rate, Game Accelerator 288, and low input lag, which suit fast-paced games.

Does it support Dolby Vision and HDR10+?

It supports Dolby Vision and HDR10+, along with HLG, for a wide range of HDR content.

What is included in the box?

The TV comes with a flush wall mount, a remote control, and a stand. A wireless subwoofer is optional and sold separately.

How does it compare to the TCL QM8?

The A400U is a step below the QM8 in peak brightness and dimming zones, but it adds a gallery design and included wall mount.

Can I use it with a soundbar?

Yes. It has HDMI eARC for connecting a soundbar, and it also supports an optional wireless subwoofer to boost bass.

Is the stand included?

Yes, a stand is included, but the flush wall mount is the highlight for a clean look.

TCL 55" A400U Designer Series QD-Mini LED QLED 4K Smart Google TV (2026)

Q: Where is the TCL 55" A400U Designer Series QD-Mini LED QLED 4K Smart Google TV (2026) cheapest?

At Walmart, for $698.00, as of our latest check.

Q: What do buyers say about the TCL 55" A400U Designer Series QD-Mini LED QLED 4K Smart Google TV (2026)?

Rated 3 out of 5 from 1 ratings.

Q: Where can I buy the TCL 55" A400U Designer Series QD-Mini LED QLED 4K Smart Google TV (2026)?

2 stores we checked sell it, including Walmart, Best Buy.

Best price now

$698.00at WalmartChecked 8 h ago

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

Visit Walmart

What reviewers say

Owners and reviewers generally praise the A400U for its bright, colorful picture and smooth gaming performance. Many appreciate the included wall mount and the TV's slim design. Criticism focuses on black uniformity and viewing angles.

What people mention

Picture qualityPraisedReviewers highlight deep blacks and bright highlights thanks to mini-LED local dimming.
Gaming performancePraisedThe 144Hz panel and low input lag are called great for fast-paced games.
Viewing anglesCriticisedColors and contrast fade when watching from off-center.
BloomingMixedSome see halos around bright objects on dark backgrounds, though others find it minimal.
DesignPraisedThe slim profile and flush mount are liked for a clean wall installation.

About the TCL 55" A400U Designer Series QD-Mini LED QLED 4K Smart Google TV (2026)

Elevate your space with the Designer Series TV—where refined aesthetics meet cutting-edge performance. Powered by QD-Mini LED technology and Local Dimming Pro, it delivers striking contrast with deep blacks and brilliantly precise highlights, while High Brightness Pro ensures vivid clarity in any lighting. The TCL AiPQ Pro Processor intelligently optimizes every scene in real time, bringing out lifelike color, detail, and depth. With a native 144Hz refresh rate, Game Accelerator 288, and Motion Rate 480 with MEMC, fast-moving action stays ultra-smooth and responsive—perfect for gaming and sports alike. Premium ONKYO audio delivers rich, immersive sound, while support for an optional wireless subwoofer adds even greater depth and impact. A Flush Wall Mount is included for a seamless, gallery-inspired installation that enhances the Designer Series' elegant profile. When the TV is off, Art Library lets you display curated artwork to complement your décor, while AI Art empowers you to create one-of-a-kind images that reflect your personal style, making the Designer Series as beautiful when idle as it is during every movie, show, or game.