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LG OLED GX Series 77” Review: A Masterpiece of Design & Next-Gen Picture Technology

The LG OLED GX Series 77” (model OLED77GXPUA) represents the pinnacle of television innovation, blending breathtaking aesthetics with cutting-edge performance. Designed to function as both a technological marvel and an art installation, this 2020 iF Design Award winner redefines what a premium home entertainment experience can be. Below, we dissect every aspect of this flagship TV, from its groundbreaking OLED panel to its seamless smart ecosystem.


Gallery Design: Art Meets Technology

The LG GX Series is not just a TV—it’s a statement piece. Dubbed a “Gallery Design” television, it features an impossibly thin 0.9-inch profile when wall-mounted, creating a “no gap, no shadow” illusion that makes the screen appear to float seamlessly against your wall. The bezel-less design and matte finish ensure the focus remains solely on the content, while the optional recess box (included) and raceway cable concealer (sold separately) help hide wires for a pristine look.

LG strongly recommends professional installation for the flush-mount setup, but the TV also supports standard VESA 300×300 mounts for DIY enthusiasts. If wall-mounting isn’t an option, the GX can be paired with optional feet (sold separately), though its true elegance shines when displayed as living-room artwork.


Picture Quality: Infinite Contrast & AI-Powered Precision

At the heart of the GX Series lies LG’s self-lighting OLED technology, where 8.3 million independent pixels emit their own light. This delivers perfect black levels, infinite contrast, and over a billion rich colors, outperforming LCD/LED TVs that rely on backlighting. Combined with the α9 Gen 3 AI Processor 4K, the TV intelligently enhances every frame using deep learning:

  • AI Picture Pro: Analyzes on-screen objects and backgrounds to optimize sharpness, contrast, and color.
  • Dolby Vision IQ: Adjusts HDR settings dynamically based on ambient lighting and content genre.
  • Upscaling Mastery: LG’s AI engine transforms lower-resolution content into near-4K clarity, preserving details in older films or streaming content.
  • Filmmaker Mode: Preserves directors’ original intent by disabling motion smoothing and other post-processing effects.

The native 120Hz refresh rate and OLED Motion Pro technology eliminate motion blur in fast-paced sports and action scenes, ensuring buttery-smooth playback.


Gaming Excellence: HDMI 2.1 & Ultra-Low Latency

Gamers will find the GX Series a dream come true. As one of the first OLED TVs with full HDMI 2.1 support (4K/120Hz, 40Gbps bandwidth), it unlocks next-gen console and PC gaming potential:

  • NVIDIA G-SYNC & FreeSync: Eliminate screen tearing and stuttering for fluid gameplay.
  • 1ms Response Time: Ensures instantaneous pixel transitions, crucial for competitive gaming.
  • VRR & ALLM: Auto Low Latency Mode switches to game-optimized settings instantly, while Variable Refresh Rate syncs the display’s refresh rate with the GPU.
  • HGiG Support: Accurately renders HDR game content as developers intended.

Whether you’re navigating warzones or racing at 200mph, the GX’s pixel-level precision and near-zero input lag keep you ahead of the curve.


Audio: Dolby Atmos & AI Sound Pro

While the GX’s ultra-slim design limits speaker depth, LG compensates with a robust 4.2-channel, 60W audio system (including a 20W woofer). AI Sound Pro analyzes content to upscale stereo to virtual 5.1.2 surround sound, while Dolby Atmos adds immersive, multidimensional depth—bullets whiz overhead, and rainstorms envelop the room.

For audiophiles, the TV is WiSA-ready (requires a separate dongle) and supports wireless Bluetooth surround setups with LG speakers. The eARC (Enhanced Audio Return Channel) enables lossless audio passthrough to high-end soundbars or receivers.


Smart Features: webOS, ThinQ AI & Voice Control

Powered by webOS, LG’s interface remains one of the most intuitive smart TV platforms available. The redesigned Home Dashboard centralizes smart home controls, while LG Channels offers free access to 180+ streaming channels. Premium apps like Disney+, Apple TV+, and Netflix are seamlessly integrated, with Dolby Vision and Atmos support where available.

The GX stands out as the only TV with Google Assistant and Alexa built-in, enabling hands-free voice commands to control content, smart devices, or search queries. The Magic Remote complements this with point-and-click navigation, a scroll wheel, and dedicated buttons for leading streaming services.

Additional features like Sports Alert (real-time game updates) and Gallery Mode (display art or photos when idle) further cement its versatility.


Connectivity & Practical Considerations

The GX offers future-proof connectivity:

  • 4x HDMI 2.1 ports (including eARC).
  • 3x USB 2.0 ports, Ethernet, optical audio, and RS-232C for professional installations.
  • Bluetooth 5.0 and Wi-Fi 802.11ac for wireless streaming.

One caveat: The GX prioritizes wall-mounting, so the stand must be purchased separately, and installation accessories (like the raceway concealer) are optional. At 86.9 lbs (without stand), it’s surprisingly lightweight for its size but demands sturdy wall studs for safe mounting.


Conclusion: The Ultimate Fusion of Form & Function

The LG OLED GX Series 77” is a triumph of engineering—a TV that disappears into your wall yet dominates with unrivaled picture quality, gaming prowess, and smart capabilities. Its self-lit OLED panel delivers reference-grade visuals, while the α9 Gen 3 processor ensures every pixel shines with AI-refined clarity. The inclusion of HDMI 2.1, Dolby Atmos, and built-in voice assistants makes it a future-proof centerpiece for luxury homes.

While the requirement for a separate stand or professional installation may add to the cost, the GX justifies its premium status with a design that transcends traditional TVs. For those seeking a blend of artful minimalism and bleeding-edge performance, LG’s Gallery Series isn’t just a TV—it’s the definitive statement in modern home entertainment.


Specifications Recap:

  • Display: 77” OLED, 4K UHD (3840 x 2160), 120Hz refresh rate.
  • Processor: α9 Gen 3 AI Processor 4K.
  • HDR Support: Dolby Vision IQ, HDR10, HLG.
  • Audio: 4.2ch 60W, Dolby Atmos, WiSA-ready.
  • Smart Platform: webOS with ThinQ AI (Google Assistant, Alexa).
  • Gaming: HDMI 2.1, G-SYNC, FreeSync, 1ms response time.
  • Design: 0.9” depth, flush wall-mount included.
  • Dimensions (WxHxD): 67.8” x 39” x 0.9” (without stand).