LG OLED55C66LB 55 Inch OLED evo AI 4K Smart TV 2026

LG OLED55C66LB — 55" OLED evo AI 4K Smart TV (2026)

The LG C6 is the benchmark mid-range OLED for 2026, and this year it's taken its biggest step forward yet. For the first time, the C-series gets LG's flagship Alpha 11 AI Gen3 processor — the same chip as the premium G6 — bringing a meaningful leap in brightness, picture precision and colour handling over its predecessor.

Brightness Booster & Alpha 11 AI Gen3 Processor

The OLED55C66LB is brighter than any previous C-series model, with LG's Brightness Booster technology magnifying each individual pixel for luminous, detailed highlights — from snow-capped mountains to neon cityscapes. The Alpha 11 AI Gen3 processor analyses everything you watch in real time, applying the optimum picture and sound settings for your content automatically.

Certified Perfect Black & Perfect Colour — In Any Light

Over 8.3 million self-lit pixels give the C66LB its fundamental advantage: every pixel controls its own light output, so blacks are absolute and contrast is infinite. LG's Perfect Black and Perfect Colour are both independently certified by UL — not just marketing claims. The result is an image that holds its depth and accuracy whether the room is bright or dark, and from any angle in the room.

webOS 2026 — Smart TV Powered by Gemini & Copilot

LG's webOS 2026 is one of the best smart TV platforms available. Every major streaming service is built in: Netflix, Prime Video, Disney+, Apple TV+, BBC iPlayer, ITVX, Channel 4, Channel 5, NOW and more — plus LG Channels for free streaming content. Controlled by the AI Magic Remote with hands-free voice recognition, AI Chatbot for picture and sound adjustments by voice, and AI Voice ID for personalised recommendations per user. LG's webOS Re:New programme means the platform stays up to date with software upgrades for five years.

Ultimate Gaming — 165Hz, G-Sync, FreeSync, 0.1ms

The C6 holds nothing back for gaming. Four HDMI 2.1 ports, 4K@120Hz for PS5 and Xbox Series X, VRR up to 165Hz for PC, NVIDIA G-Sync, AMD FreeSync Premium, ALLM and an 0.1ms response time. Game Optimizer and the Game Dashboard give you immediate access to gaming settings. Dolby Vision Gaming at 4K 120Hz is also supported.

Extraordinary Cinema — Dolby Vision, Dolby Atmos, Filmmaker Mode

Dolby Vision and Ambient Filmmaker Mode deliver the picture exactly as the director intended, with Filmmaker Mode automatically adjusting to your room's lighting while keeping colour accuracy intact. Dolby Atmos with Alpha 11 AI Sound Pro (Virtual 11.1.2 up-mix) means 40W of audio output that tracks and follows the on-screen action.

Pair with LG's Sound Suite

The OLED55C66LB is compatible with LG's Sound Suite audio products — including the LG Soundbar range and Sonos (sold separately). Dolby Atmos FlexConnect lets you place speakers freely without the usual positioning restrictions.

See It In Our Fleet Showroom

The OLED55C66LB is on display at Jennings Sound & Vision, 185 Fleet Road, Fleet GU51 3BL. We can run a live comparison with the LG G6 or our Samsung OLED models — book a demo at jenningsuk.com/demos/ or just come in.

Technical specifications

Please note features and specifications are subject to change without prior notification. Information and technical specifications are provided for guidance only and cannot be guaranteed as accurate. Errors and omissions excepted.