Are you looking for an OLED TV that delivers stunning picture quality without draining your wallet? The LG Class B4 Series OLED 4K Smart TV might be exactly what you need.
This TV brings perfect blacks, rich colors, and a smooth 120Hz refresh rate to your living room at a price that makes OLED technology accessible to more buyers than ever.
With the B5 already on shelves, the B4 has dropped to incredible sale prices. But does the lower price come with too many trade-offs?
In this full review, we break down picture quality, gaming performance, smart features, design, sound, and more. Keep reading to find out everything you need to know before you buy.
Key Takeaways
- Perfect OLED blacks and contrast make this TV a dream for dark room viewing. Movies, shows, and games look stunning with over 8.3 million self-lit pixels producing true black and vivid colors.
- 120Hz refresh rate with HDMI 2.1 on all four ports means this TV handles gaming at 4K/120fps with ease. It supports NVIDIA G-Sync, AMD FreeSync Premium, VRR, and ALLM right out of the box.
- The Alpha 8 AI Processor provides solid upscaling of lower resolution content and decent HDR tone mapping. It is not the most powerful chip in LG’s lineup, but it gets the job done for the price.
- Bright room performance is limited due to lower peak brightness (around 650 nits) and a glossy screen that picks up reflections. You will get the best results in a room where you can control the lighting.
- The price has dropped significantly since the B5 launched. You can find the 65-inch model for around $999 and the 48-inch version for as low as $599, making this one of the best OLED deals available right now.
- Sound quality is average at best, so plan to pair this TV with a soundbar or speaker system. The built-in speakers handle dialog but lack bass and volume.
LG 65 Inch Class OLED B4 Series 4K Smart TV Overview
- SELF-LIT PIXELS: LG's signature OLED technology creates an incredible watching experience and stellar picture quality...
- DOLBY VISION, FILMMAKER AND DOLBY ATMOS: Experience the magic of the big screen right from your couch. Every LG OLED comes...
The LG 65 Inch Class OLED B4 Series Smart TV is a 2024 model built on LG’s WOLED panel technology. It uses over 8.3 million self-lit pixels to deliver picture quality that LED/LCD TVs simply cannot match at this price point.
The TV runs on the Alpha 8 AI Processor, which handles 4K upscaling, noise reduction, and HDR tone mapping. It supports Dolby Vision, HDR10, and HLG formats for HDR content. The native 120Hz panel refresh rate pairs with a 0.1ms response time for smooth, responsive visuals.
LG’s webOS platform powers the smart TV experience. You get access to all major streaming apps like Netflix, Disney+, Apple TV+, and Amazon Prime Video. The included Magic Remote offers both motion control and traditional button navigation.
Available in 48, 55, 65, 77, and 83 inch sizes, the B4 covers a wide range of room sizes and budgets. It is LG’s entry point into OLED and sits below the C4 and G4 in the 2024 lineup.
Picture Quality and HDR Performance
The picture quality on the LG B4 OLED is its strongest selling point. Each pixel produces its own light and can turn off completely. This means you get true black levels with no blooming, haloing, or light bleed.
Colors are rich and saturated. The TV covers about 93% of the DCI-P3 color gamut, which is very good for this price class. Skin tones look natural and accurate in Cinema Mode. White balance measures close to the 6500K standard right out of the box.
HDR performance is solid but has limits. Peak brightness reaches around 650 nits in Filmmaker Mode, which is lower than the C4 or G4. The TV handles Dolby Vision and HDR10 content well through competent tone mapping. Bright highlights still pop in a dark room, but they lose some punch in brighter settings.
Shadow detail is impressive in controlled lighting. You can see fine details in dark scenes from movies like Gravity or Blade Runner without the artifacts common on LED/LCD panels.
Top 3 Alternatives for LG B4 Series OLED 4K Smart TV
LG C4 OLED steps up with a brighter panel, better reflection handling, and the more powerful Alpha 9 Gen7 processor. It costs more but delivers a noticeable improvement in HDR and bright room performance. It also supports a 144Hz refresh rate.
- SELF-LIT PIXELS: LG's signature OLED technology creates an incredible watching experience and stellar picture quality...
- BRIGHTNESS BOOSTER: Our Brightness Boosting technology magnifies each individual pixel for luminous quality that shines with...
Samsung S90C OLED uses QD-OLED technology for wider color volume and higher brightness. It is a strong pick for bright living rooms and sports fans who want vibrant, punchy colors.
- SAMSUNG OLED TECHNOLOGY: See movies, games, and more in a whole new light thanks to the mesmerizing picture quality across a...
- NEURAL QUANTUM PROCESSOR W/ 4K UPSCALING: If you’re streaming an HD movie, watching sports, or looking at home videos,...
Sony BRAVIA XR A80L OLED offers Sony’s Cognitive Processor XR for excellent motion handling and upscaling. It also features Acoustic Surface Audio, which uses the screen itself as a speaker. This TV is ideal for movie lovers who value image processing and sound quality.
- This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original...
- OLED CONTRAST AND COLOR– Pure black, lifelike brightness, and billions of accurate colors enhanced by XR OLED Contrast Pro...
Gaming Performance on the LG B4 OLED
The LG B4 is a fantastic gaming TV for its price. It offers a native 120Hz refresh rate, Variable Refresh Rate (VRR), and Auto Low Latency Mode (ALLM) across all four HDMI 2.1 ports.
Input lag is very low. The 0.1ms response time ensures fast-paced games feel snappy and responsive. First person shooters, racing games, and action titles all benefit from this speed.
The TV includes a Game Optimizer mode and a dedicated gaming dashboard. You can adjust black stabilizer, picture settings, and response time directly from the game menu without leaving your game.
Third party compatibility is excellent. The B4 supports NVIDIA G-Sync and AMD FreeSync Premium, which reduce screen tearing on compatible PCs and consoles. It also supports 4K Dolby Vision gaming, a feature that PS5 and Xbox Series X owners will appreciate.
LG’s Gaming Portal provides access to cloud gaming services. Microsoft recently partnered with LG to bring Xbox Cloud Gaming to select OLED TVs, including the B4, through a free firmware update.
Design and Build Quality
The LG B4 features a slim, modern design that looks clean on a stand or mounted on a wall. The OLED panel is thin along the top half, while the bottom section houses the electronics and is slightly thicker.
The bezels are minimal. A thin black frame surrounds the screen and stays out of the way. The overall look is premium for an entry-level OLED.
The included stand supports two positions. You can set the TV at a standard height or a lower position depending on your furniture. The stand is wide enough to provide good stability on most TV consoles.
Build materials feel solid. The back panel uses a mix of metal and plastic that holds up well. Cable management is straightforward with a simple routing channel behind the panel.
The TV weighs about 32 pounds for the 65 inch model without the stand. Wall mounting is easy with a standard VESA 300x300mm mount pattern.
Smart TV Features and webOS Platform
The LG B4 runs webOS, LG’s own smart TV operating system. It provides quick access to streaming apps, settings, and connected devices from a clean home screen.
App selection is strong. You get Netflix, Disney+, Hulu, Amazon Prime Video, Apple TV+, Peacock, YouTube, and many more. LG recently added the Apple Music app with Dolby Atmos support, which is a bonus for music fans.
The platform loads fast and responds smoothly to input. Scrolling through menus and switching between apps feels snappy. The Alpha 8 processor keeps things moving without frustrating lag.
LG promises webOS updates for up to five years after purchase. This is reassuring for buyers who want their smart features to stay current. You also get built-in Alexa, Google Assistant, and Apple AirPlay 2 support.
One small drawback is the absence of a few apps. PBS and DirecTV Stream are still not available on LG’s platform. Most buyers will not miss these, but it is worth noting if you rely on them.
Sound Quality and Audio Features
Sound quality on the LG B4 is fair to good. The built-in speakers deliver clear dialog at moderate volumes. You can understand conversations in movies and TV shows without straining.
Bass response is weak. There is very little low-end punch at any volume level. Action scenes, music, and explosions sound thin without an external speaker system.
The speakers also distort at higher volumes. Pushing the sound too loud causes breakup and loss of clarity. For casual viewing at reasonable levels, the built-in audio works fine.
LG includes an AI Sound Pro feature that expands the width of the soundstage. It adds a sense of space to the audio but does not fix the fundamental limits of small TV speakers.
The best solution is to pair the B4 with a soundbar or AV receiver. The TV has an eARC HDMI port that supports Dolby Atmos passthrough. It also offers Bluetooth audio output, LG’s WowCast wireless soundbar connection, and WiSA compatibility for wireless speaker setups.
LG 55 Inch B4 OLED 4K Smart TV
- SELF-LIT PIXELS: LG's signature OLED technology creates an incredible watching experience and stellar picture quality...
- DOLBY VISION, FILMMAKER AND DOLBY ATMOS: Experience the magic of the big screen right from your couch. Every LG OLED comes...
The 55 inch LG B4 OLED is the sweet spot for many buyers. It fits smaller living rooms and bedrooms while still delivering the full OLED experience.
Picture quality is identical to the larger sizes. You get the same self-lit pixel technology, 120Hz refresh rate, and Alpha 8 AI Processor. The only difference is screen size.
This model has been available for around $999 at retail and even less during sales. It provides excellent value for a 55 inch OLED and competes well against larger LED/LCD TVs at similar prices.
If you sit about 6 to 8 feet from your TV, the 55 inch model gives you a full 4K experience. You will see the detail and clarity that the panel offers without needing a bigger screen.
Connectivity and Ports
The LG B4 OLED shines in connectivity. All four HDMI ports support HDMI 2.1 with HDCP 2.2. This is uncommon at this price range and gives you full flexibility with gaming consoles, media players, and streaming devices.
Each HDMI port handles 4K at 120Hz, VRR, ALLM, and eARC (on HDMI port 2). You do not need to worry about which port you plug your PS5 or Xbox into. They all deliver the same performance.
Beyond HDMI, the TV includes two USB ports for media playback and firmware updates. An RJ45 Ethernet port provides a wired internet connection for more stable streaming. WiFi and Bluetooth are built in for wireless connections.
A fiber optic digital audio output is available for older sound systems. The TV also supports LG’s WowCast and WiSA wireless audio standards. This gives you multiple options for connecting external speakers without running cables across your room.
Dark Room vs Bright Room Viewing
The LG B4 performs best in a dark or dimly lit room. This is where OLED technology truly shines. Perfect blacks, deep contrast, and rich colors all come alive with the lights turned down.
In a fully dark home theater, the B4 looks stunning. Peak brightness of around 650 nits is more than enough because your eyes adjust to the available light. Colors stay accurate and shadow detail is excellent.
Bright room performance is a different story. The glossy screen reflects light from windows and lamps. Direct sunlight can make the image hard to see. The lower peak brightness means the picture cannot compete with ambient light the way brighter OLEDs or LED/LCD TVs can.
LG includes ISF Expert modes for both bright and dark rooms. You can calibrate and save separate picture settings for different times of day. This helps, but it does not fully overcome the brightness limitation.
If your TV room has large windows without curtains, consider a brighter model like the LG C4 or Samsung S90C. If you can draw the blinds, the B4 will reward you with a beautiful image.
Off-Axis Viewing Performance
One area where the LG B4 OLED beats most LED/LCD TVs is off-angle viewing. The OLED panel maintains its picture quality even at steep angles.
You can move up to 45 degrees to either side and still see accurate colors, deep blacks, and good contrast. There is very little color shift or brightness loss as you move off center.
This makes the B4 a great choice for wide living rooms or open-plan spaces. Family viewing is comfortable because everyone sees a consistent image, no matter where they sit.
LED/LCD TVs often struggle here. Backlight designs focus light straight ahead, so side viewers see washed-out colors and reduced contrast. OLED’s self-emissive technology avoids this issue entirely.
If you often watch TV from different spots in the room, this is a real advantage. The B4 delivers a reliable image from almost any seat in the house.
Upscaling and Content Processing
The Alpha 8 AI Processor inside the B4 handles content upscaling with solid results. It takes lower resolution sources like 720p streams or standard definition DVDs and scales them up to the TV’s native 4K resolution.
The processor smooths out jagged lines and reduces noise in compressed video. Streaming content from YouTube or cable TV looks cleaner and sharper than you might expect from a budget OLED.
True 4K content looks excellent. The TV reproduces fine detail in nature documentaries, sports broadcasts, and blockbuster movies. The Alpha 8 is not as advanced as the Alpha 9 chip found in the C4, but it handles most content well.
Dolby Vision content benefits from intelligent tone mapping. The B4 maps HDR signals to its native brightness range without crushing highlights or losing shadow detail. The result is a balanced, natural image that respects the creator’s intent.
Who Should Buy the LG B4 OLED?
The LG B4 OLED is ideal for budget-conscious buyers who want real OLED performance. If you have been waiting for OLED prices to drop, this TV is your entry ticket.
Movie fans who watch in a dark room will love the perfect blacks and contrast. Gamers will appreciate the 120Hz panel, low input lag, and full HDMI 2.1 support on every port. Streaming users get a fast, well-stocked smart TV platform with years of software updates.
This TV is not the best choice for bright rooms. If your main viewing space has lots of windows and natural light, you will want a brighter TV. It is also not ideal if you demand the absolute best HDR highlights and peak brightness.
The sweet spot buyer is someone who values picture quality, owns blackout curtains or watches at night, and wants OLED without paying flagship prices. The LG B4 delivers a premium viewing experience at a mid-range cost.
Final Verdict: Is the LG B4 OLED Worth Buying in 2026?
The LG Class B4 Series OLED 4K Smart TV remains a strong buy in 2026. With prices continuing to drop since the B5 replaced it, the B4 offers outstanding value for anyone ready to step up to OLED.
Its strengths are clear. Perfect blacks, excellent contrast, wide viewing angles, strong gaming features, and a reliable smart TV platform make it a well-rounded television. The four HDMI 2.1 ports give it future-proof connectivity that many competitors lack.
The weaknesses are manageable. Lower peak brightness and a reflective screen mean you need a darker room. The built-in speakers are average. The Alpha 8 processor is a step below the C4’s chip. None of these are deal-breakers at this price.
If you find the 65 inch model around $999 or the 48 inch version near $599, grab it before stock runs out. This is one of the best OLED deals you will find in 2026, and it delivers a picture that will make you wonder why you did not buy an OLED sooner.
Frequently Asked Questions
Is the LG B4 OLED good for gaming?
Yes, the LG B4 is excellent for gaming. It has a 120Hz refresh rate, 0.1ms response time, and VRR support. All four HDMI ports are HDMI 2.1, so you can connect multiple consoles and gaming PCs at full 4K/120fps. It also supports NVIDIA G-Sync, AMD FreeSync Premium, and 4K Dolby Vision gaming.
Does the LG B4 OLED support Dolby Vision and Dolby Atmos?
The LG B4 supports Dolby Vision for HDR video and can decode or pass through Dolby Atmos audio via its eARC HDMI port. It does not support HDR10+. For full Dolby Atmos surround sound, connect a compatible soundbar or AV receiver.
How bright is the LG B4 OLED TV?
The LG B4 reaches about 650 nits of peak brightness in Filmmaker Mode with a 10% window. This is fine for dark room viewing but limits performance in bright rooms. Brighter OLEDs like the LG C4 or Samsung S90C are better options for well-lit spaces.
What sizes does the LG B4 come in?
The LG B4 OLED is available in 48 inch, 55 inch, 65 inch, 77 inch, and 83 inch sizes. The 65 inch model is the most popular choice and offers the best balance of screen size and value.
Is the LG B4 better than the LG C4?
The LG C4 is better overall. It has higher peak brightness, better reflection handling, a faster Alpha 9 Gen7 processor, and a 144Hz refresh rate. The B4 is the budget option with excellent picture quality for dark rooms. If your budget allows, the C4 is worth the upgrade.
Does the LG B4 have a risk of burn-in?
OLED burn-in is possible with any OLED TV, but modern panels have reduced this risk significantly. The LG B4 includes pixel refresher and screen shift features that help prevent burn-in during normal use. Avoid displaying static images for extended periods and you should have no issues.
Last update on 2026-04-04 / Affiliate links / Images from Amazon Product Advertising API. Some of the links on this website are affiliate links, which means that at no additional cost to you, I earn a commission if you click through and make a purchase. I only recommend products and services that I believe will add value to my readers. Thank you for your support!
