TCL 98A400U-UK 98 Inch A400U 4K Ultra HD HDR QD-Mini LED Smart Google TV 2026

TCL 98A400U-UK 98 Inch A400U 4K Ultra HD HDR QD-Mini LED Smart Google TV 2026

The TCL 98A400U-UK is built for home cinema enthusiasts who demand the biggest possible screen without compromising on picture quality. This massive 98-inch TV solves the problems of blooming, poor black levels and dull colours found in standard large-screen LED TVs by using QD-Mini LED technology with 1344 precise dimming zones and 2500 nits peak brightness. With 93% DCI-P3 colour gamut, All-Domain Halo Control that eliminates halo effects, ONKYO 2.0 Hi-Fi audio and Google TV with Gemini AI, you get a breathtaking home cinema experience on a truly monumental scale.

QD-Mini LED with 1344 Precise Dimming Zones
QD-Mini LED combines the merits of QLED and OLED technologies, transforming traditional backlighting into lighting close to pixel-level precision. The 98A400U delivers 1344 dimming zones for deeper blacks and higher brightness.

Dark scenes look genuinely black without blooming, and bright highlights pop with clarity. You get OLED-like contrast with higher peak brightness and a longer lifespan, even on a 98-inch screen where imperfections are easily spotted.

2500 nits Peak Brightness
The 98A400U delivers up to 2500 nits peak brightness with an ultra-high contrast ratio of 25,000,000:1, revealing rich details in both highlights and shadows that are invisible on lower-brightness TVs.

HDR content looks stunning, with bright scenes that dazzle and dark scenes that retain every detail. On a 98-inch screen, the impact is truly cinematic.

93% DCI-P3 Ultra-Wide Colour Gamut
Utilising Quantum Dot technology, the A400U unveils over 1 billion hues of vibrant, precise colours, providing up to 93% colour gamut according to the DCI-P3 standard.

Your favourite films and shows look more lifelike with deeper reds, truer blues and more natural greens across the massive 98-inch display.

All-Domain Halo Control Technology
TCL's all-domain halo control technology covers the entire path from light generation to imaging, integrating a powerful light-emitting chip, condensed micro lens, Micro-OD, dynamic lighting bionic algorithm and CSOT HVA panel technology.

Halos around bright objects on dark backgrounds are virtually eliminated. On a 98-inch screen, this is absolutely essential for maintaining picture quality.

CSOT HVA Panel Technology with 7000:1 Native Contrast
CSOT's HVA panel technology forms a butterfly-wing-shaped microstructure that enables precise control over light passing through the liquid crystal layer, delivering up to 7000:1 native contrast.

Dark areas appear even darker, significantly enhancing the screen's contrast ratio and delivering a more vivid, immersive visual experience.

HVA Pro Panel with 5x Contrast Enhancement
The HVA Pro Panel features nanoscale bionic technology, delivering 5x contrast enhancement, ultra-low reflectivity and a >178° viewing angle.

You get richer image details and less glare, and the picture looks great from anywhere in the room, even on a 98-inch screen.

Bionic Colour Optimisation Technology
This technology intelligently analyses image content and enhances scene colours with remarkable precision while restoring and protecting natural skin tones.

Scenes look more vivid and immersive, but faces stay natural and believable on the massive screen.

ONKYO 2.0 Hi-Fi System with Lateral Wide Sound Field
Onkyo brings 80+ years of home theatre expertise. The lateral wide sound field acoustic design widens the sound field by 35% with side-firing mid-field speakers.

Dialogue stays clear and sound effects are immersive. On a 98-inch screen, the audio needs to fill the room, and Onkyo delivers.

Vertical AI Sound Field
This feature creates 360° spatial surround sound by calibrating the audio to your specific room, matching sound effects to on-screen content.

Even without a separate soundbar, you get immersive audio that matches the massive picture.

144Hz Native Refresh Rate with 288Hz VRR Game Accelerator
The A400U delivers dual-mode ultra-high refresh rates: native 4K at 144Hz and 1080P at 288Hz, plus AMD FreeSync Premium Pro, ALLM and HDMI 2.1.

Gaming on a 98-inch screen is incredibly smooth with less stuttering, tearing or blurring.

Google TV with Gemini AI
Google TV puts 700,000+ movies, TV episodes and live channels at your fingertips. Gemini answers questions, plays music, controls smart home devices and generates custom AI art in 4K.

Your 98-inch TV becomes an entertainment hub, smart home controller and conversation partner all in one.

TSR AiPQ Processor
The TSR AiPQ processor delivers pixel-level optimisation with AI ClarityMaster, AI ContrastMaster, AI ColourMaster and AI MotionMaster working together.

Every frame bursts with vibrant dynamism, layered depth and natural clarity for lifelike realism.

44.5mm Ultra-Slim Flat Design
The A400U features a 44.5mm integrated flat and slim design with nearly seamless 3mm-gap wall mounting and the Star Ring Cooling System.

Your 98-inch TV looks like a canvas of art on your wall despite its massive size.

Key Features at a Glance

• 98-inch 4K Ultra HD QD-Mini LED display
• 1344 precise dimming zones
• 2500 nits peak brightness / 25,000,000:1 contrast ratio
• 93% DCI-P3 ultra-wide colour gamut – over 1 billion hues
• All-Domain Halo Control Technology – eliminates blooming
• CSOT HVA panel with 7000:1 native contrast ratio
• HVA Pro Panel – 5x contrast enhancement, >178° viewing angle
• 0.5% low reflection film
• Powerful light-emitting chip with improved brightness and efficiency
• Condensed micro lens with 8x optical stability increase
• Micro-OD for slimmer design and reduced halo
• Bionic Colour Optimisation – scene enhancement and skin tone preservation
• ONKYO 2.0 Hi-Fi with lateral wide sound field (35% wider)
• Vertical AI Sound Field – 360° spatial surround sound
• 144Hz native refresh rate / 288Hz VRR Game Accelerator
• AMD FreeSync Premium Pro, ALLM and HDMI 2.1
• Game Bar with multiple picture modes
• Google TV with Gemini AI voice assistant
• TSR AiPQ Processor with AI ClarityMaster, ContrastMaster, ColourMaster and MotionMaster
• 44.5mm ultra-slim flat design with Star Ring Cooling System
• 3mm-gap wall mounting capability
• Art Gallery, Digital Art (100,000+ artworks) and Ambient Mode
• Custom AI Art generation with Gemini
• 2913 QLED technology patents

The Ultimate 98-Inch Home Cinema

The TCL 98A400U-UK is the ultimate choice for home cinema enthusiasts who want the biggest possible screen without compromising on picture quality, brightness or design. With 1344 precise dimming zones, 2500 nits peak brightness, 93% DCI-P3 colour, ONKYO 2.0 Hi-Fi audio, 144Hz gaming and Google TV with Gemini AI, it delivers a breathtaking large-screen experience. Perfect for those who want the absolute best home entertainment on the biggest possible canvas.