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A large 77 inch black OLED television on a stand, thin flat panel with minimal bezels

LG Electronics

LG Electronics OLED77B6GUA 77" OLED TV 4K 120Hz a8 AI Processor 4K Gen3 Dolby Vision Dolby Atmos WebOS 26 2026

SKU CH-876B-GX03Q

A 77-inch OLED screen delivers perfect blacks and vivid colour across 8.3 million self-lit pixels, driven by the a8 AI Processor 4K Gen3 with Dolby Vision and Dolby Atmos.

  • Year2026
  • ColorBlack
  • TV TypeOLED TV
  • Smart TVYes
  • Curved TVNo
  • Screen Size77"
  • Perfect Black from 8.3 million self-lit pixels
  • AI picture tuning with a8 Processor 4K Gen3
  • Dolby Vision and Dolby Atmos for cinema feel
  • 120 Hz native refresh and 0.1 ms response for gaming
  • WebOS 26 smart platform with Wi-Fi 5 and Bluetooth 5.3

77-inch OLED Smart TV for Cinema and Gaming

The LG OLED77B6GUA is a 2026 model built for viewers who want cinematic colour and responsive gameplay on a single large panel. Its self-lit pixels and a8 AI Processor 4K Gen3 adjust picture and sound to the content being watched. The set runs WebOS 26 and connects via Wi-Fi 5, Bluetooth 5.3 and four HDMI inputs.

Sustained Brightness and Motion Handling

Because each of the 8.3 million pixels emits its own light, the display maintains perfect black levels without the haloing or backlight bleed seen in LED sets during long viewing sessions. The 120 Hz native refresh rate and sub-0.1 ms response time keep motion clear during extended gaming, while VRR at 120 Hz, G-Sync Compatible and FreeSync Compatible support prevent tearing over hours of play.

77-inch Screen Size as the Deciding Factor

The 77-inch diagonal determines whether the TV fits the intended room and viewing distance. Buyers who need a smaller footprint or a different aspect ratio should look elsewhere, as this panel is fixed at 16:9 and the physical dimensions are set by the 77-inch class.

Highlights

  • Perfect Black from 8.3 million self-lit pixels
  • AI picture tuning with a8 Processor 4K Gen3
  • Dolby Vision and Dolby Atmos for cinema feel
  • 120 Hz native refresh and 0.1 ms response for gaming
  • WebOS 26 smart platform with Wi-Fi 5 and Bluetooth 5.3

Specifications

BrandLG
ModelOLED77B6GUA
Year2026
ColorBlack
TV TypeOLED TV
Smart TVYes
Curved TVNo
Screen Size77"
Recommended Resolution4K
Maximum Resolution3840 x 2160
Aspect Ratio16:9
Refresh Rate120Hz
OLED TVYes
V-ChipYes
Video Processora8 AI Processor 4K Gen3
Support Video Signal480i, 480p, 720p, 1080i, 1080p, 2160p
Speaker Configuration2
HDMI4 In
LANEthernet In
WirelessWi-Fi / Bluetooth
USB2
Digital Audio1 Optical Out
Front/Side InputsSide
Internet ConnectionWired / Wireless
Remote ControlYes
VESA300mm x 200mm
TV FeaturesG-Sync (Nvidia Adaptive Sync)
FeatureFull Web Browser
Dimensions (W x H x D)67.7" x 41.6" x 10.6"
Dimensions With Stand (W x H x D)67.7" x 41.6" x 10.6"
Dimensions Without Stand (W x H x D)67.7" x 38.9" x 2.0"
Weight51.4
Weight With Stand51.4
Weight Without Stand50.5
Package Content1 x Remote, 1 x E-Manual, 1 x Power Cable, 1 x Quick Start Guide, 1 x Stand

Questions about this item

How much heat and power does the 77" OLED panel draw when it runs all day?

The a8 AI Processor 4K Gen3 manages brightness per scene, and Pixel Dimming turns off individual pixels for perfect black, keeping heat output low during extended viewing.

Which external devices or services must I already have to use the smart features and 120 Hz gaming?

You need a home Wi-Fi 5 network or wired Ethernet for WebOS 26 apps, plus a console or PC with an HDMI 2.1 output to unlock 120 Hz VRR and G-Sync or FreeSync compatibility.

Will my older 1080p Blu-ray player and soundbar work with the four HDMI inputs and optical output?

Yes — the TV accepts 480i through 2160p signals on all four HDMI ports and provides an optical audio out for legacy soundbars, while the 2.0 Ch down-firing speakers handle everyday viewing.

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