Yes, the LG OLED B4 is a sharp, affordable 4K OLED, and we rank it as a smart buy when you want LG contrast without C-series pricing. That answer changes in a bright room, because the B4 does not have the extra brightness headroom that gives premium OLEDs more punch at noon. It also changes if you refuse to add a soundbar, because slim OLED cabinets still sound thin. Buy it for movies, streaming, and gaming in controlled light, not as a daylight brute.

Our TV editors track LG’s B-series against the C4, Samsung S90D, and Sony A80L, then sort the real-world trade-offs that matter once the box is open.

Pros

  • Deep OLED blacks and wide viewing angles
  • 120Hz gaming support and modern console-friendly inputs
  • Dolby Vision support for major streaming services
  • Cleaner value play than LG’s brighter step-up models

Cons

  • Less brightness than LG C4 and mini-LED rivals like Samsung QN90D
  • Built-in audio stays modest
  • OLED care matters if you live on static menus, sports tickers, or PC desktops
Buyer decision LG OLED B4 Why it matters
Screen sizes 48, 55, 65, 77 inches Enough spread for bedrooms, apartments, and main living rooms without forcing a jump to a pricier line.
Panel type 4K OLED Perfect black levels and strong off-axis viewing make shared seating look better than LCD alternatives.
Refresh and gaming 120Hz class panel, gaming-ready HDMI inputs Fits PS5, Xbox Series X, and high-end PC play without input juggling becoming a hobby.
HDR formats Dolby Vision, HDR10, HLG Dolby Vision matters for streaming-heavy households. Samsung's S90D skips it, which changes the value math fast.
Smart TV platform LG webOS Familiar and broad on apps, but the home screen carries enough promotional clutter to annoy clean-design purists.
Best room fit Dim to moderately lit spaces OLED contrast looks rich when light is controlled. Sunlight cuts into the B4's strongest advantage.
Main trade-off Lower brightness than LG C4 and bright mini-LED rivals We get the OLED look at a friendlier entry point, but we give up some HDR punch.

Quick Take

The B4 lands in the sweet spot for buyers who want OLED quality without paying for the flashiest panel on the shelf. It keeps the picture traits that matter most, black level, viewing angle, and clean motion, while trimming the premium extras that push the C4 higher up the ladder.

That trim is the point. The B4 does not pretend to be the brightest OLED or the loudest all-in-one TV, and that honesty makes it easier to recommend than a spec-sheet showoff.

At a Glance

The B4 looks like the kind of TV that disappears into the room when the content is good. Dark scenes look rich, black bars look truly black, and the screen does not pull attention away from the image the way many LCD sets do.

The catch shows up outside the image. The cabinet is thin, which keeps the silhouette clean, but it also leaves less room for convincing built-in sound. That trade-off is not small, because most buyers discover the audio gap only after they sit through dialogue-heavy shows and want more body from the center channel.

Core Specs

The B4’s core pitch is simple: 4K OLED, 120Hz class gaming support, multiple HDMI inputs, and LG’s webOS platform. That is the right foundation for a modern TV because it covers movies, sports, consoles, and streaming without forcing a weird compromise.

The numbers matter less than the setup logic behind them. Four HDMI inputs matter because one slot usually disappears into eARC for a soundbar, and that leaves enough room for a console, a streaming box, and a spare device without constant cable swapping. The drawback is just as clear: this is still an entry OLED, so brightness and audio are the places where LG protects the lineup above it.

What It Does Well

The B4’s strongest trick is contrast. Dark-room viewing looks expensive, and not in a fake showroom way. We get the kind of image that makes nighttime movies, prestige dramas, and games with moody lighting look properly dimensional instead of gray and flat.

Gaming is another clean win. Buyers who own both a PS5 and an Xbox Series X see the appeal immediately, because the B4’s port layout and 120Hz support remove the annoying compromise of choosing which console gets the best connection. That matters more than flashy marketing language, and it is a real quality-of-life win that a lot of cheaper TVs ignore.

LG’s Dolby Vision support also helps. Against Samsung’s S90D, the B4 keeps format flexibility that matters in streaming-heavy homes, especially when the TV serves as the default movie screen. The drawback is brightness ceiling, because the B4 does not hit with the same HDR force as LG’s C4 or a good mini-LED set.

Main Drawbacks

The biggest knock against the B4 is not picture quality, it is headroom. In a dim room, the TV looks sharp and deliberate. In a bright room, it has to work harder, and that is where premium OLEDs and bright mini-LED sets pull ahead.

Built-in audio is the second weak spot. Thin TVs do not leave much room for real bass or scale, so buyers who skip a soundbar end up underbuying the system. That is the hidden tax of this class of TV, and the B4 does not escape it.

We also need to call out format support. Dolby Vision helps, but the B4 does not give you every HDR format under the sun, and Samsung still skips Dolby Vision entirely on the S90D. Most guides pretend format support is a trivia note. That is wrong, because the streaming app stack in your house decides what you actually see.

The Real Decision Factor

Most buyers make the wrong call by obsessing over resolution and ignoring room light. That is the mistake. The B4 is a room-specific weapon, and it performs best when the room works with the panel instead of fighting it.

Another thing buyers miss is OLED maintenance discipline. Static sports tickers, long gaming HUDs, and PC desktops demand more care than an LCD. That does not make the B4 fragile, it makes the ownership pattern different. If the TV lives on a dashboard, a news channel, or a desktop login screen for hours every day, a mini-LED set like Samsung’s QN90D makes more sense.

Compared With Rivals

Against the LG C4, the B4 is the value play. The C4 gives you more brightness headroom and a more premium ceiling for HDR, and that matters for buyers who want more visual pop in mixed lighting. The B4 keeps the essential OLED experience and usually lands as the smarter purchase when the budget has limits.

Against Samsung’s S90D, the choice splits along format support and image taste. Samsung chases brightness and a punchy presentation, but it drops Dolby Vision. The B4 gives us Dolby Vision and a more straightforward path for streaming-first households. If the TV doubles as a console hub and the room stays dim, the B4 is the cleaner answer. If daylight brightness is the priority, the S90D or a bright mini-LED earns a hard look.

Against Sony’s A80L, the B4 keeps the value edge and the gaming-friendly port story. Sony still carries a strong reputation for motion and processing polish, and buyers who care about that cinematic tuning have a reason to compare. The B4 wins when price, gaming convenience, and Dolby Vision matter more than processing bragging rights.

Best Fit Buyers

Buy the B4 if you want an OLED for movies, streaming, and consoles in a controlled-light room. Buy it if you want the premium contrast experience without moving into the C4 tier. Buy it if your household uses Dolby Vision services and wants a TV that handles them cleanly.

The B4 also fits apartment setups and secondary living rooms where the TV sees a mix of TV, sports, and game nights. It does not fit buyers who want the brightest display on the wall or the best built-in audio with no extras. For those shoppers, the LG C4 or a brighter mini-LED from Samsung makes more sense.

Who Should Look Elsewhere

Skip the B4 if the screen sits opposite a big window or in a family room that never gets dark. Skip it if you want a TV that can carry movie night without a soundbar. Skip it if your usage pattern is long hours of static desktop work, cable news, or sports tickers.

If that sounds like your life, the better alternatives are clear. Step up to the LG C4 for more OLED headroom, or move to Samsung’s QN90D if daylight control is not part of the deal. That is not overkill, it is matching the panel to the room.

What Happens After Year One

After year one, the B4 stops being a spec story and becomes an ownership story. The panel still delivers the same core OLED strengths, but the daily routine matters more, especially if the TV sees long stretches of static content. Let the TV finish its compensation cycles, keep the inputs tidy, and avoid treating it like a permanent monitor for frozen UI.

The secondhand market also rewards careful owners. Buyers ask about hours, screen uniformity, and burn-in far more aggressively with OLED than with LCD. That means the B4 holds its value best when it lives a mixed-use life, not a parked-on-news-channel life. We lack hard long-run data on every unit past the early ownership window, so the smart move is simple: protect the panel and keep the use case balanced.

What Breaks First

The first thing that cracks is not the panel, it is convenience. The TV starts to feel small if you expect it to do everything alone, because the built-in speakers and bright-room performance hit their limits before the screen does.

The next stress point is setup friction. HDMI CEC, soundbars, game consoles, and streaming boxes create the kind of handshake annoyances that make buyers blame the TV when the ecosystem is the real culprit. The B4 does not cause that problem, but it does not erase it either. Once the system grows past a simple two-device setup, a little patience pays off.

Burn-in concern sits behind all of this, and we will say it plainly: most guides make OLED fear sound bigger than it is. That is wrong because the practical answer is routine discipline, not paranoia. Static content for hours every day is the real issue.

The Straight Answer

The LG OLED B4 is the right buy for shoppers who want true OLED picture quality, modern gaming support, and Dolby Vision without paying for a brighter premium tier. We recommend it for dim and moderately lit rooms, movie-heavy households, and console setups that need clean port access.

We do not recommend it as a bright-room hero or a soundbar-free solution. If you want more brightness, step up to the LG C4. If you want a daylight fighter, look at Samsung’s QN90D. If you want a punchier rival and do not care about Dolby Vision, compare it with Samsung’s S90D.

The Hidden Tradeoff

The LG OLED B4 makes its case by keeping the OLED strengths buyers actually notice, like deep blacks and wide viewing angles, while skipping the extra brightness that makes pricier models look stronger in daytime rooms. That means the value story holds up best in dim to moderately lit spaces, especially for movies and streaming, but it is less convincing if your TV has to fight sunlight or you want a built-in speaker setup that sounds full on its own.

Frequently Asked Questions

Is the B4 bright enough for a sunny living room?

No. The B4 works best when the room lighting stays controlled. If sunlight hits the screen for much of the day, a brighter OLED like the LG C4 or a mini-LED like Samsung QN90D makes more sense.

Is the B4 good for PS5 and Xbox Series X?

Yes. This is one of the B4’s best use cases because the TV’s gaming-ready input layout and 120Hz support fit both consoles cleanly. The drawback is simple, if you never game, you pay for hardware you do not use.

Do we need a soundbar with the B4?

Yes, if you care about dialogue weight, bass, or movie impact. The B4’s slim cabinet keeps the TV elegant, but it leaves built-in audio behind. A soundbar turns the whole package from decent to satisfying.

Should we buy the B4 or the C4?

Buy the B4 if value matters more than peak brightness. Buy the C4 if you want more HDR punch, better daylight confidence, and a more premium OLED ceiling. The B4 is the smarter value buy, the C4 is the stronger step-up.

Does the B4 support Dolby Vision?

Yes, and that is a real selling point. Dolby Vision gives the B4 an advantage over Samsung’s S90D for streaming-heavy homes that watch a lot of Dolby Vision titles.

Is burn-in still a real concern?

Yes, for static content and long hours of fixed UI. Mixed use keeps the risk in check, but buyers who leave the same ticker, game HUD, or desktop taskbar on screen all day need to respect OLED more than LCD.