LG OLED55C66LB 55 Inch OLED evo AI C6 4K Ultra HD HDR Smart TV 2026

LG OLED55C66LB.AEK 55 Inch OLED evo AI C6 4K Ultra HD HDR Smart TV (2026)

The LG OLED55C66LB OLED evo AI C6 4K Smart TV builds on LG’s long-standing reputation in OLED technology, combining refined picture quality, advanced AI processing and a genuinely useful smart platform. It’s designed for people who want a TV that performs just as well with films and sport as it does with gaming and everyday viewing.

OLED evo Technology – Depth, Detail and Realism

At the heart of this model is LG’s OLED evo panel. Unlike traditional LED TVs, OLED uses self-lit pixels that can switch on and off individually. This allows for true blacks, strong contrast and more accurate colours.

The evo upgrade adds an extra layer of brightness, helping highlights stand out more clearly without washing out darker areas. The result is a picture that feels more natural and balanced, whether you're watching in a bright room or with the lights down.

Alpha 11 AI Processor Gen 3 – The Engine Behind the Picture

This TV is powered by LG’s most advanced processor to date. The Alpha 11 AI Processor Gen 3 works in the background to improve what you're watching in real time.

It enhances lower-resolution content using Dual Super Upscaling, sharpens detail, and adjusts brightness and contrast scene by scene. With a noticeably faster CPU and GPU, everything from fast-moving sports to cinematic scenes feels smoother and more refined.

HDR Performance & Filmmaker Mode

Support for Dolby Vision and advanced HDR processing means you get improved colour depth and better highlight detail. Bright scenes look vivid, while darker scenes retain subtle detail instead of appearing flat.

Filmmaker Mode is especially useful if you want a more authentic viewing experience. It automatically adjusts settings like motion smoothing and colour so films are displayed closer to how they were originally intended.

120Hz Display – Smooth Motion for Sport & Gaming

The native 120Hz panel keeps motion looking fluid, which is particularly noticeable during live sports, action films and gaming. Fast scenes appear clearer, with less blur and judder.

Gaming Features That Make a Difference

LG continues to focus heavily on gaming, and it shows here.

• Ultra-fast response time (under 0.1ms)
• HDMI 2.1 support for high frame rate gaming
• 4K at 120Hz for consoles and even higher refresh rates via PC
• NVIDIA G-SYNC and AMD FreeSync Premium compatibility
• Dolby Vision Gaming support

There’s also a built-in Game Optimiser menu, letting you tweak settings quickly without leaving your game. Whether you're on PlayStation, Xbox or PC, performance stays smooth and responsive.

AI Sound & Immersive Audio Processing

Sound is often overlooked on slim TVs, but LG has put effort into improving it here.

AI Sound Pro analyses what you’re watching and adjusts audio accordingly. Dialogue is clearer, background effects are better separated, and virtual 11.1.2 upmixing creates a wider soundstage.

If you pair it with a compatible LG soundbar, WOW Orchestra allows both the TV speakers and soundbar to work together, giving a fuller, more room-filling sound.

webOS 26 – Smarter and More Personal

The updated webOS platform feels quicker and more intuitive. It uses AI to learn your viewing habits and recommend content that actually makes sense for you.

Features include:

• Personalised content suggestions
• AI Concierge for tailored recommendations
• Voice control with intelligent recognition
• Integration with tools like Microsoft Copilot
• Optional advanced AI features through Google Gemini

LG also promises up to five years of updates, which helps keep the TV feeling current for longer.

AI Convenience Features

Beyond picture and sound, AI is used to make everyday operation easier.

• AI Agent helps guide you through features
• AI Chatbot can assist with troubleshooting
• Voice commands make navigation quicker
• Personalised profiles adapt to different users

It’s all designed to reduce the time spent searching and adjusting settings.

Clean, Modern Design

The slim OLED panel and minimal bezels give the TV a premium look without being distracting. It sits neatly on a stand or can be wall-mounted for a more streamlined setup.

Key Features at a Glance

• 55” OLED evo 4K Ultra HD display
• Alpha 11 AI Processor Gen 3 with Dual Upscaling
• Dolby Vision HDR & Filmmaker Mode
• Native 120Hz refresh rate
• Ultra-fast gaming performance with HDMI 2.1
• NVIDIA G-SYNC & AMD FreeSync Premium support
• AI Sound Pro with virtual 11.1.2 surround
• webOS 26 Smart TV with AI personalisation
• Sleek, ultra-thin design

A Strong All-Round OLED Choice

The LG OLED55C66LB doesn’t just focus on one area—it delivers a well-balanced experience across picture, sound, gaming and smart features. It’s a solid option if you want a premium 55-inch TV that performs consistently well across everything you watch.

Technical Specifications 

General

Connectivity

Programmes & Functions

Design Elements

Features

Technical Details

Display

Accessories

Efficiency & Standard

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