55" LG 55MRGB88B3B
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55" LG 55MRGB88B3B
LG 55MRGB88B3B Smart TV
55" Mini RGB TV with 4K resolution and AI processor
The LG 55MRGB88B3B TV offers a spacious 55" screen, 4K Mini RGB technology and advanced image processing using the Alpha 8 AI 4K Gen3 processor. Thanks to RGB Primary Colour Pro, dual 100% colour volume certification, Precision Dimming and support for Dolby Vision / HDR10 / HLG, you will enjoy vivid colours, deeper contrast and a detailed 4K picture when watching films, series and sports. The LG 55MRGB88B3B smart TV also has gamers in mind – it offers a native 120Hz panel, VRR up to 144Hz, AMD FreeSync Premium, ALLM, Game Dashboard and Motion Booster 288. The sound is provided by a 20W 2.0-channel system with Dolby Atmos and AI Sound Pro with virtual 11.1.2 surround sound. The webOS 26 operating system is complemented by Multi AI, AI Magic Remote, LG Shield, webOS Re:New, LG Gallery+, Home Hub, Google Cast, Apple AirPlay and LG Channels.
55" / 4K Mini RGB
screen size Size / Display Technology
4K Ultra HD / 120 Hz
Resolution / Frequency
webOS 26
Operating System
20W / Dolby Atmos
Sound Power
300×300
VESAKey Features of the LG 55MRGB88B3B Smart TV
- 55" TV with 4K Mini RGB technology
- 4K Ultra HD resolution 3,840×2,160 px
- RGB Primary Colour Pro with dual 100% coverage of DCI-P3 and Adobe RGB colour space¹
- Tandem LED technology for accurate and vivid colour reproduction
- Precision Dimming for deeper contrast and better detail rendition²
- Alpha 8 AI 4K Gen3 processor with 5× faster NPU performance³
- AI Super Upscaling 4K and Dynamic Tone Mapping Pro⁴
- Support for Dolby Vision, HDR10 and HLG
- 20W 2.0-channel sound with Dolby Atmos
- AI Sound Pro with virtual 11.1.2 sound⁵
- webOS 26 operating system with Multi AI functions
- LG Shield for privacy and data protection
- webOS Re:New programme with update support for up to 5 years⁹
- AI Magic Remote for easier control of smart features¹⁰
- LG Gallery+ to display art, ambient content and your own memories¹¹
- Home Hub to connect and control your smart home¹²
- Google Cast, Apple AirPlay, Multi View and LG Channels
- Gaming features VRR up to 144Hz, AMD FreeSync Premium, ALLM, HGiG and Game Dashboard¹³
- Motion Booster 288 for a smoother gaming experience at an optimised resolution¹³
- WOW Orchestra to combine the sound of the TV and a compatible LG soundbar¹⁵
- Bluetooth with ultra-low latency for supported game controllers¹⁷
Mini RGB evo for precise and vivid colours
The LG 55MRGB88B3B uses 4K Mini RGB technology, which is designed for more accurate colour reproduction and a more impressive visual experience on the big screen. Tandem LED technology stacks several RGB colour layers to help achieve more vivid colour reproduction. Thanks to RGB Primary Colour Pro, the TV has dual 100% colour volume certification for the DCI-P3 and Adobe RGB standards, so you'll appreciate the rich shades when watching films, series, sports and photos. ¹
Higher contrast with Precision Dimming
Precision Dimming technology helps to control the backlight more precisely and improve the contrast in individual scenes. The Alpha 8 AI 4K Gen3 processor intelligently works with light, dimming blocks, brightness and detail to make the picture more impressive and natural. The LG 55MRGB88B3B smart TV can thus better render dark and light parts of the image and enhance the cinematic experience on the large 55" screen size screen. ²
Alpha 8 AI 4K Gen3 Processor
Image and sound processing is handled by the Alpha 8 AI 4K Gen3 processor. It uses artificial intelligence for a sharper 4K picture, more vivid colours and better content customisation to your preferences. Compared to the previous generation, it offers up to 5× faster NPU performance, so it has plenty of power for advanced AI features, picture optimisation and a personalised smart environment. ³
AI picture with upscaling up to 4K
AI Super Upscaling helps improve the picture up to 4K quality, while Dynamic Tone Mapping Pro adjusts brightness and detail in individual scenes. AI Picture Pro recognises content and supports its sharper and more natural rendering. There's also AI HDR Remastering, which can optimise the colour, brightness and contrast of SDR content to make it look richer. ⁴
Cinematic picture with Dolby Vision and FILMMAKER MODE
The LG 55MRGB88B3B TV supports Dolby Vision, HDR10 and HLG, so you can enjoy content with more pronounced contrast, colour depth and better detail rendering. FILMMAKER MODE helps keep the cinematic picture as close as possible to the creators' original intent and can adapt to the surrounding environment for a more pleasant viewing experience. ¹⁶
Surround sound with AI Sound Pro
The built-in 20W 2.0-channel sound is complemented by Dolby Atmos and AI Sound Pro technology. The TV can adjust the sound according to the content type, enhance voices, music and sound effects and create a virtual 11.1.2 surround effect. This makes watching films, sports and concerts feel much more intense and the sound better fills the room. ⁵ There's also AI Object Remastering Pro, which helps to enhance voices and key sound elements in the scene.
webOS 26 with Multi AI functions
The webOS 26 operating system offers a clear smart environment with advanced artificial intelligence features. Multi AI combines search, personalisation and smart assistants, so you can more easily find content, get recommendations or manage your TV settings. The LG 55MRGB88B3B supports AI Search, AI Concierge, AI Voice ID with My Page, AI Chatbot and AI Picture/Sound Wizard. ⁶ ⁷ ⁸
AI Magic Remote for easier control of the LG 55MRGB88B3B
The AI Magic Remote allows quick access to the TV's smart functions. A single AI button takes you to the artificial intelligence functions, while the scroll wheel and voice control make it easy to navigate the menu, search for content and control the LG 55MRGB88B3B TV. ¹⁰
- AI Voice ID – recognises the user based on their voice and offers personalised recommendations
- AI Search – Microsoft Copilot allows you to get more results and solutions
- AI Chatbot – assistance with setup and troubleshooting
- AI Concierge – personalised keywords and recommendations based on search and viewing history
- AI Picture Wizard – algorithms learn your preferences from 1.6 billion picture possibilities
- AI Sound Wizard – creation of a sound profile from more than 40 million parameters
- “Hi LG” – activation of voice commands
Security with LG Shield technology
LG Shield helps protect the privacy, data and integrity of the system. It uses 7 key security technologies that ensure secure data storage and management, encryption, user authentication, access control, secure data transmission and responses to security incidents. As a result, the webOS smart environment is also ready to work with personal accounts and connected services.
webOS Re:New Programme
The webOS Re:New programme helps keep your LG 55MRGB88B3B TV up to date for a long time. For selected models, it offers software updates for up to 5 years, so you can look forward to new features, user interface improvements and support for modern services even after you buy the TV. ⁹
LG Gallery+ turns the LG 55MRGB88B3B screen into a part of the interior
When you're not watching the TV, it can become a stylish home accessory. LG Gallery+ offers access to works of art, ambient videos and other visual content that turns the screen into a distinctive canvas. You can also use Google Photos, display your own memories or supplement the visual content with music. ¹¹ What's more, the picture can adapt to the ambient light conditions thanks to automatic brightness control.
Personalised dashboard
The LG 55MRGB88B3B smart TV can display important information in one place. On the personalised dashboard, you can check the weather, sports event alerts, Google Calendar, viewing reservations or information from the Home Hub. The TV is not just for watching content, but also serves as a practical centre for home information. ⁸ ¹²
Home Hub for a smart home
Home Hub connects smart devices in the home and allows for their convenient control directly on the TV screen. The LG 55MRGB88B3B supports connection with LG ThinQ, Google Home and Matter standard devices, so you can manage compatible smart products from one place, monitor their status and control them conveniently. ¹² The TV supports both Google Cast and Apple AirPlay, so you can easily share content from your phone, tablet or laptop to the large 55" screen. The Multi View feature allows you to display multiple sources at once, which is useful, for example, when watching sports, sharing content from your mobile or working with multiple types of entertainment at once.
LG Channels for more entertainment
LG Channels brings a variety of content from live TV and on-demand offerings into one clear hub. This makes it easier to discover new shows, films and other content directly within the webOS environment without a complicated search. ¹⁴
Gaming equipment for smooth gameplay
The LG 55MRGB88B3B is also ready for gaming. It offers a native 120Hz panel, VRR up to 144Hz, AMD FreeSync Premium, ALLM, HGiG and Game Dashboard for quick access to gaming settings. Motion Booster 288 helps reduce motion blur and support a smoother response when gaming at an optimised resolution. ¹³ The gaming features are also complemented by Dolby Vision support for gaming in 4K at 120Hz.
Bluetooth with ultra-low latency
The LG 55MRGB88B3B also has cloud gaming with wireless controllers in mind. The TV supports Bluetooth controllers with ultra-low latency, which helps reduce input lag to less than 2.5 ms. This allows you to enjoy smoother and more responsive control that is closer to a wired connection. ¹⁷
LG Gaming Portal
The LG Gaming Portal serves as a practical hub for game discovery. It provides access to gaming apps, cloud services and games controllable by remote control or gamepad. This allows gamers to easily find new content and quickly get to their favourite titles directly from the TV's interface. ¹⁴
WOW Orchestra for connection with an LG soundbar
When connected to a compatible LG soundbar, you can use WOW Orchestra technology. This synchronises the TV and soundbar's sound into a single unit to create a fuller and more spatial sound experience. The feature is particularly useful for films, concerts and sports broadcasts, where you will appreciate a wider and more pronounced soundstage. ¹⁵
¹ The LG Mini RGB display is Intertek certified for dual 100% colour coverage measured according to IDMS v1.2, point 5.18. Mini RGB evo achieves more than 75% of the BT.2020 colour gamut by area ratio. Unlike Micro RGB TVs, Mini RGB TVs do not contain R-chip LEDs and their chips do not operate independently.
² Images and comparisons for the Precision Dimming function are for illustrative purposes.
³ Compared to the 2025 Alpha 8 AI 4K Gen2 processor based on an internal specification comparison.
⁴ Images are upsampled to up to 4K quality. Results may vary depending on the source resolution and content type.
⁵ AI Sound function must be activated in the sound mode menu. The resulting sound may vary depending on the listening environment.
⁶ AI Search using partner artificial intelligence services requires an internet connection. Partner services are subject to change or may require a subscription. Availability may vary by region and model and the feature may not be available in countries without LLM support.
⁷ AI Concierge features may vary by region or model. The offers shown may differ on release and keyword recommendations vary by application and time of day.
⁸ AI Voice ID support may vary by region and country. The feature only works with apps that support the Voice ID account. The widgets provided may vary by country and may be changed or cancelled without prior notice.
⁹ webOS Re:New is a software update programme available only on selected models. The number of updates and length of support may vary by product, model or region. The update schedule, features, apps and services may vary.
¹⁰ The AI Magic Remote provides quick access to the TV's artificial intelligence features, but does not have integrated artificial intelligence processing. The design, availability and features of the remote may vary by region and supported language. Some features may require an internet connection.
¹¹ The available LG Gallery+ content may vary by region and is subject to change. Access to the full content and features requires an LG Gallery+ subscription. The Google Photos feature works after signing in to a Google Photos account and when at least 10 photos are available in the app.
¹² Access to smart network services and features requires an LG account and agreement to the relevant terms and conditions. LG supports Matter standard Wi-Fi devices, but the supported Matter services and features may vary depending on the connected devices. Initial connection of ThinQ and Matter devices should be done via the ThinQ mobile app.
¹³ 144Hz is the maximum refresh rate based on VRR and only works with inputs that support 144Hz. In Motion Booster mode, the resolution may be reduced to optimise performance. A 288Hz refresh rate is only supported at 2K resolution and Motion Booster 288 provides up to 288Hz at an optimised Full HD resolution.
¹⁴ The availability of services, content and channels may vary by region and country. Some services may require a subscription or an internet connection.
¹⁵ The soundbar can be purchased separately. Sound mode control may vary by model and use of the LG TV remote control is limited to certain features only.
¹⁶ FILMMAKER MODE is a trademark of UHD Alliance, Inc. FILMMAKER MODE is automatically launched in the Apple TV+ and Amazon Prime Video apps.
¹⁷ The feature applies to supported Bluetooth Ultra Low Latency Controllers. The resulting latency may vary depending on the controller used, the game, the app, the network environment and other cloud gaming conditions.
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| Code: | wk6027a17 |
| Links: | Producer's Website: |
| Manufacturer information |
LG electronics INC. Alfred-Herrhausen-Allee 3-5, 65760 Eschborn, Germany, [email protected], +49 6196 7883000 
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