TCL 85A400U-UK 85 Inch A400U 4K Ultra HD HDR QD-Mini LED Smart Google TV 2026

TCL 85A400U-UK 85 Inch A400U 4K Ultra HD HDR QD-Mini LED Smart Google TV 2026

The TCL 85A400U-UK is built for home cinema lovers who want a truly massive screen without compromising on picture quality. This 85-inch monster 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 1008 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 premium home cinema experience on a truly grand scale.

QD-Mini LED with 1008 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 85A400U delivers 1008 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 an 85-inch screen where imperfections are easily spotted.

2500 nits Peak Brightness
The 85A400U 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 an 85-inch screen, the impact is genuinely 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. Every frame masterfully renders stunningly vivid colours across the massive 85-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. This is Mini LED done right, especially important on an 85-inch screen where blooming would be highly visible.

Powerful Light-emitting Chip
Compared with previous generation conventional chips, the A400U's powerful light-emitting chip significantly improves brightness and energy efficiency, reproducing natural bright and dark scenes with clarity.

You get better picture quality while using less energy, saving you money on electricity bills despite the massive screen size.

Condensed Micro Lens
TCL's self-developed condensed micro lens technology precisely controls light direction through its arch bridge dimming design, greatly improving backlight uniformity and halo control capabilities with an 8 times increase in optical stability.

Picture details are clearer, with improved halo control and consistent backlight performance across the entire 85-inch screen.

Micro-OD
With TCL's powerful Mini LED optical technology, the A400U delivers an astonishing Micro-OD, offering a slimmer TV unit while significantly reducing the Mini LED halo issue.

Stars in the night sky look deep, delicate and sharp, and the 85-inch TV looks elegant on your wall despite its massive size.

CSOT HVA Panel Technology with 7000:1 Native Contrast
CSOT's HVA panel technology stands at the forefront of the industry, forming a butterfly-wing-shaped microstructure that enables precise control over light passing through the liquid crystal layer.

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 with a butterfly-wing microstructure, delivering 5x contrast enhancement, ultra-low reflectivity, energy efficiency and a >178° viewing angle.

You get richer image details, less glare, and a great picture from anywhere in the room, even on an 85-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. Sports, films and nature programmes all look their best.

ONKYO 2.0 Hi-Fi System with Lateral Wide Sound Field
Onkyo is a global high-end audio brand with 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, honeycomb panel diaphragm and rare earth NdFeB permanent magnet.

Dialogue stays clear, sound effects are immersive, and you get powerful audio that matches the stunning picture quality. On an 85-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, supporting automatic matching of exclusive sound effects by sensing content.

Even without a separate soundbar, you get immersive, room-filling audio that adapts to what you are watching.

144Hz Native Refresh Rate with 288Hz VRR Game Accelerator
The A400U leverages VRR technology to deliver 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 an 85-inch screen is incredibly smooth with less stuttering, tearing or blurring. Game Bar lets you choose preferred picture modes.

Google TV with Gemini AI
Google TV puts 700,000+ movies, TV episodes, live channels and YouTube videos at your fingertips. Now with Gemini, your smarter voice assistant can answer questions, play music, control smart home devices, and even generate custom AI art in 4K.

Your 85-inch TV becomes an entertainment hub, smart home controller, office display and conversation partner all in one.

TSR AiPQ Processor
The TSR AiPQ processor delivers pixel-level optimisation for visuals, 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.

41.9mm Ultra-Slim Flat Design
The A400U features a 41.9mm integrated flat and slim design with nearly seamless 3mm-gap wall mounting, plus the Star Ring Cooling System with aviation-grade heat-conducting materials for improved heat dissipation.

Your 85-inch TV looks like a canvas of art on your wall, blending effortlessly into any home décor despite its massive size.

Art Gallery, Digital Art and Ambient Mode
Display hundreds of famous paintings even when the TV is off, explore over 100,000 AI artworks, or transform your space with crackling campfires, gentle rain sounds and lapping waves.

Your 85-inch TV becomes a personal art gallery and wellness tool, not just a screen.

Key Features at a Glance

• 85-inch 4K Ultra HD QD-Mini LED display
• 1008 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
• 41.9mm 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 85-Inch Home Cinema

The TCL 85A400U-UK is the ultimate choice for home cinema enthusiasts who want a massive 85-inch screen without compromising on picture quality, brightness or design. With 1008 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 premium large-screen experience at a price that makes sense. Perfect for those who want the absolute best home entertainment on the biggest possible canvas.

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