77" OLED S90F 4K Vision AI Smart TV and Sound Tower MX-ST40F (2025)

Features

Enrich your experience with Samsung Vision AI

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Key features at a glance

Companion that enriches your life

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A smarter voice assistant

Bixby

With updated intelligence, Bixby in your Samsung AI TV is the perfect center of your AI home. It can process multiple commands at once, and it's better at grasping the wider context. Enjoy smoother conversations, easier searches, more intuitive reactions and seamless device control.

* Voice commands and multi turn is supported for 10 languages (US/UK/IN(en)/DE/FR/IT/ES/BR/MX/KR).
* Not all accents, dialects and expressions recognized.
* Q8F and above support far-field mics. Q7F and above support TV remotes. U8000F needs a SmartThings mobile remote.

Settings that intelligently optimize picture and sound

AI Mode

AI Mode offers a quick-access menu to adjust adaptive picture and sound settings, intelligently optimizing your TV experience to your surroundings and the content you're watching.

Sound optimized and remastered to your content and space

Adaptive Sound Pro

Listen to sound just as the creators intended, with clear voices and vivid, balanced tones. Your TV's AI processor recognizes different sounds — like dialogue and background music — and optimizes them for their type and your room's acoustics, before ultimately refining them with audio remastering technology.

* Experience may vary depending on the content and environment.

A dog barks in a living room. A microphone connected to the TV detects the noise. In response to the noise, the TV plays a scene of two boys and a puppy running along a sunflower field to soothe the barking dog.

A dog barks in a living room. A microphone connected to the TV detects the noise. In response to the noise, the TV plays a scene of two boys and a puppy running along a sunflower field to soothe the barking dog. Playing video

Stay connected to your pets while you're away

Pet Care

Use your TV as a pet-sitting assistant when you're outside. Your TV can detect noises like barking through its microphone, and then automatically turn on your pet's favorite content to calm them down.

* Real-time streaming on mobile devices is supported on Android OS 11.0 and higher versions or iOS 16.0 and higher versions, and is available on 2025 Samsung TVs and later models. It only works when the TV is turned off.
* TV must be connected to a power source to use this feature.
* TV and mobile device must be connected to SmartThings to send and receive notifications.

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Compared to 2025 OLED S85F (NQ4 AI Gen2)

* Viewing experience may vary according to types of content and format.
* Upscaling may not apply to PC connection and Game Mode.

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* Viewing experience may vary according to types of content and format.
* 4K AI Upscaling may not apply to PC connection and Game Mode.

Picture Quality

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Picture Quality

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Deep blacks, clean whites and lively colors

OLED

Samsung’s unique OLED expresses deep blacks, clean whites and a full range of lively colors. With cutting-edge self-illuminating pixels, what you see is a picture that's pure, bright and more accurate than ever before.

Depth perceived just as a person’s eyes would

Real Depth Enhancer

Watch the figures on screen stand out with more realism. Real Depth Enhancer increases the contrast between the objects in the foreground from the background — mirroring how a human eye processes depth. So when you're watching a nature documentary, it really looks like the rhinos are marching toward you.

Enjoy a full range of authentic colors

PANTONE Validated

As a trusted symbol of color fidelity by industry experts, ‘PANTONE Validated' certifies the accurate expression of 2,140 PANTONE colors and 110 newly-added skin tone shades. So you can be sure that you're getting a rich, true-to-life viewing experience.

* PANTONE validation received based on HDR screen.

Intelligently enhanced color expression

Color Booster Pro

AI recognizes each scene and enhances color expression accordingly, so your viewing experience becomes more vivid and dynamic.

Easily spot moving objects and text

AI Motion Enhancer Pro

Our AI processor smooths out and sharpens motion, so you can see moving objects and text far more clearly. Watching live sports and fast-paced action has never been easier.

* Viewing experience may vary according to types of content and format.

Intelligently refines content to HDR-like quality with AI

Auto HDR Remastering Pro

Enjoy brighter highlights, clearer details and more vibrant colors. Our AI technology learns the differences between SDR and HDR content. Then it converts SDR content into brilliant HDR-like quality.

An icon depicts how the TV's dark scenes are enhanced as the brightness in the room increases.

An icon depicts how the TV's dark scenes are enhanced as the brightness in the room increases. Playing video

Catch hidden details in dark scenes

HDR Brightness Optimizer

When there's bright daylight or ambient light in the room, our processor responds by enhancing visibility in dark scenes. That way, you can always enjoy clear, vivid HDR imagery with all the little details.

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Gaming Experience

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Gaming Experience

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Fine-tune your game settings as you play

Game Bar

Optimize your gameplay even more with Game Bar. Samsung TVs give you a handy in-game menu for settings like FPS, input lag, minimap zoom and more. It also lets you apply ultra-wide aspect ratios of 21:9 and 32:9 to expand your view on bigger screens.

* Super Ultrawide GameView (21:9, 32:9) is available for certain PC and console games supporting ultrawide screens.
* Some game titles may not support this feature.
* Game Bar's Zoom-in mode is not supported for certain refresh rates.
* Game Bar UI is subject to change without prior notice.

A split screen displays the same brawler character on both sides. With Auto Low Latency Mode turned Off on the left side, the character is unable to dodge a blast. With Auto Low Latency Mode turned On in the right side, the screen reacts faster to the input, allowing the brawler to dodge the blast.

A split screen displays the same brawler character on both sides. With Auto Low Latency Mode turned Off on the left side, the character is unable to dodge a blast. With Auto Low Latency Mode turned On in the right side, the screen reacts faster to the input, allowing the brawler to dodge the blast. Playing video

Faster, smoother low input lag gameplay

Auto Low Latency Mode (ALLM)

Auto Low Latency Mode sets optimal latency settings for your games automatically, allowing for smooth gaming and fast reactions to your commands.

* Low input lag is measured based on internal testing conditions and it is subject to change according to game settings or specific conditions.

Tear free, stutter free, low latency HDR gaming

FreeSync Premium Pro

Built on AMD FreeSync™ core technology to reduce stutter and screen tearing, FreeSync Premium Pro provides a true HDR gaming experience. It produces exceptional high dynamic range visuals while maintaining low latency for effortlessly smooth gameplay.

* Viewing experience may vary according to types of content and graphics processing unit, as well as network connection speeds and ping levels when gaming on the cloud.

The TV's AI detects that the game on screen is an RPG and optimizes various settings to match. The screen changes over to a sports game. The TV's AI detects the new game genre and re-optimizes the settings to match.

The TV's AI detects that the game on screen is an RPG and optimizes various settings to match. The screen changes over to a sports game. The TV's AI detects the new game genre and re-optimizes the settings to match. Playing video

Seamless AI-driven game optimization

AI Auto Game Mode

Let your TV detect the type of game you're playing and optimize the settings. You can free yourself from the usual setup hassle and just play.

* AI Auto Game Mode is available for certain console and PC games.

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Sound

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A TV shows a concert scene. When Q-Symphony is off, the soundbar under the TV plays audio by itself, giving off small sound waves. When Q-Symphony is on, the TV and soundbar play audio together, with both giving off large sound waves in sync.

A TV shows a concert scene. When Q-Symphony is off, the soundbar under the TV plays audio by itself, giving off small sound waves. When Q-Symphony is on, the TV and soundbar play audio together, with both giving off large sound waves in sync. Playing video

TV and soundbar play together in smooth harmony

Q-Symphony

Surround yourself with beautifully orchestrated sound. Samsung technology syncs the TV and soundbar audio to play simultaneously — without muting the speakers of either device.

* Check for Q-Symphony compatibility on soundbar product specifications.
* Soundbar sold separately.
* The location and number of speakers may vary depending on the model.

In a living room, a couple sits on a sofa and watches TV. The TV’s front speakers are lit up and soundwaves emanate from a TV’s side and up-firing speakers, travelling in multiple directions to surround the couple in a dome of sound and fill the room. Dolby Atmos logo.

In a living room, a couple sits on a sofa and watches TV. The TV’s front speakers are lit up and soundwaves emanate from a TV’s side and up-firing speakers, travelling in multiple directions to surround the couple in a dome of sound and fill the room. Dolby Atmos logo. Playing video

A next level Dolby Atmos experience

Dolby Atmos®

Enjoy a next-level surround sound experience that immerses you deep inside the action. With Dolby Atmos, it delivers multi-dimensional audio for unbelievably realistic sound.

A TV depicts a scene of a train passing by a scenic outdoor location. As it does, sound waves appear near where the train touches the tracks, indicating the noise within the scene.

A TV depicts a scene of a train passing by a scenic outdoor location. As it does, sound waves appear near where the train touches the tracks, indicating the noise within the scene. Playing video

Immersive virtual sound that tracks the action

Object Tracking Sound Lite

3D surround sound with our virtual top channel audio allows you to be immersed in the audio experience.

Catch every word without distractions

Active Voice Amplifier Pro

Enjoy clear dialogue, no matter what's going on. Our AI technology enhances voice clarity by analyzing ambient noise and background sounds from your content.

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One UI Tizen

Enjoy 7 years of
new TV experiences
for free

* Content and services may vary by region and are subject to change without notice.
* Agreement to Smart Hub Terms and Conditions and Privacy Policy is required before use.
* Some content and services require registration and subscription.
* Requires Samsung account.
* Tizen OS upgrades will be supported for up to 7 years starting from 2025, for products released in the year 2025.
* Please note that the upgrade does not cover hardware-related performance, features or durability.

Access channels for free

Endless Free Content

Access free channels, including Samsung TV Plus premium channels.Enjoy news, sports, movies, entertainment, music, kids’ shows and more. With new content continuously added, there’s always more to explore.

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One UI Tizen

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The home screen for Samsung Daily+ shows apps and services. The screen scrolls down to highlight the Most Used smart devices. Screen scrolls up and shows the category switching from Featured to Health. Scrolls back down to show the Workout Tracker options. The Galaxy Watch 6 option is highlighted.

The home screen for Samsung Daily+ shows apps and services. The screen scrolls down to highlight the Most Used smart devices. Screen scrolls up and shows the category switching from Featured to Health. Scrolls back down to show the Workout Tracker options. The Galaxy Watch 6 option is highlighted. Playing video

Elevate your day with curated lifestyle experiences

Samsung Daily+

Find apps and services for health, work and lifestyle on Samsung Daily+. You can access SmartThings, Workout Tracker, karaoke and more, all in one place.

* Samsung is not responsible for any third-party services, and is not liable for any damages or losses caused by any third-party services.

Your privacy. Secured.

Samsung Knox Security

Your privacy is secure on Samsung TVs. Sensitive data like passwords are protected, connected IoT devices are monitored and malicious apps and sites are automatically blocked. Plus, Samsung's security team helps keep your TV safe with constant updates.

* Samsung Knox Security applies to Samsung TVs powered by Tizen®, launched since 2015.
* Latest software update is required.

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SmartThings

Connect and manage your smart home devices, all from your TV

SmartThings

With a built-in smart hub, your TV can connect and control smart devices — even those requiring Matter and HCA compatibility. You can also get notifications about your devices straight from the screen, including a 3D Map View that shows your entire smart home system at a glance.

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* Available technology, functions and features may vary by country, service provider, network environment or product, and are subject to change without notice.
* Requires a Wi-Fi, Bluetooth or other wireless network connection and login to Samsung account.
* Connected devices are sold separately.
* Use of calm technology requires agreement to privacy notices from both SmartThings and the auto-registered device.
* TV and mobile device must be connected to SmartThings to use 3D Map View function. For a detailed list of supported devices, visit https://partners.smartthings.com/supported-devices.
* UI is subject to change without prior notice.

More about
SmartThings

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Gestures to control with your watch

Universal Gestures

Easily control your TV with your smartwatch. Just wear your Galaxy Watch and use hand gestures, like pinching to select an option, or moving your wrist back and forth for pause and play.

* Available apps and services may vary and are subject to change without notice.
* Only supported on Galaxy Watch4 and later models, and Wear OS 5 and higher versions.

When AI Energy Mode is off, the surroundings around the TV appear bright. A smartphone screen displaying AI Energy Mode pops up, and it switches from Off to On. With adaptive brightness and AI Energy Mode activated, the energy level decreases significantly, and the scale shifts from day to night.

When AI Energy Mode is off, the surroundings around the TV appear bright. A smartphone screen displaying AI Energy Mode pops up, and it switches from Off to On. With adaptive brightness and AI Energy Mode activated, the energy level decreases significantly, and the scale shifts from day to night. Playing video

Save energy with intelligent analysis

AI Energy Mode

Energy saving made easy with SmartThings. By turning on AI Energy Mode, it auto detects surrounding light levels and analyzes usage behaviors to adjust the brightness. Also, it analyzes the content scene by scene to subtly adjust brightness where possible, to manage energy consumption.

* Energy saving rate may vary by region, model, size, viewing conditions and type of content.  
* Products shipped in Eco Mode have some AI Energy Mode functions enabled by default, so energy saving levels when AI Energy Mode is turned on may appear lower compared to Standard Mode.
* AI Energy Mode does not work with Game Mode.
* Energy savings are based on internal test results and may vary depending on the content being displayed and surrounding brightness levels.

A Galaxy smartphone displays Quick Remote mode, which is used to increase the volume of a nearby TV as it shows a scene of a woman playing guitar.

A Galaxy smartphone displays Quick Remote mode, which is used to increase the volume of a nearby TV as it shows a scene of a woman playing guitar. Playing video

Control your TV from your phone

Quick Remote

Through your mobile device, you can access key Samsung Tizen TV features such as media, features, ambient mode and menu. Quick Remote can also act as your TV remote, allowing you to change channels, adjust the volume and more right from your phone.

* Push notifications for mobile remotes for TVs are available on (Mobile) Android OS 10.0 and higher versions with (TV) 2020 Samsung TVs and later models, and operates when the mobile device is near the TV.
* Samsung Smart TV feature access is available on (TV) 2024 Samsung TVs and later models with (Mobile) Android OS 10.0 and higher versions or iOS 15.0 and higher versions.

Spatial 3D sound with Galaxy Buds

360 Audio Mode

Immerse yourself in the scene with fluid sound from all around. Samsung TVs pair seamlessly with Galaxy Buds to deliver multi-directional 3D audio. With enhanced head tracking, it even syncs the direction of sound with your head movements.

* Galaxy Buds 360 Audio Mode is available with Galaxy Buds2 Pro, Galaxy Buds2, Galaxy Buds Pro and Galaxy Live.

Transform your TV into a karaoke stage

Karaoke

Have fun with friends and family with the karaoke feature in Samsung Daily+. You can even connect your phone to use as a mic. No need for any separate equipment — your singing setup is already here.

* Requires SmartThings app to be installed on the mobile device and connected via the same Wi-Fi network as the TV set.
* Mobile mic is optimized only for Galaxy S23 or later models and iPhone 15 & above.
* You must download the Karaoke app from Tizen to use the Karaoke function.
* An additional paid subscription is required for this service after 6 months of free use. (Users can access 5 songs per day for free without a subscription.)

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Design

A sleek design that complements any space

LaserSlim Design

OLED’s sleek and stylish design combines unique beauty with strong functionality. Featuring a groundbreaking slim form factor and minimalistic bezel, your TV blends seamlessly into any interior.

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Sustainability

* Image simulated for illustration purposes. Any changes in appearance and design specifications that do not affect product performance may occur without prior notice. UI, content and services may vary by region and are subject to change without notice.

Bring the party with you

* Sound Tower should be placed on flat surfaces and kept away from exposure to sand or dirt to ensure proper functionality.

Key Features at a glance

* The images were generated with the assistance of AI tools.

* The Samsung Sound Tower app is compatible with Android mobile phone devices running Android OS 8.0 or later.
* The Samsung Sound Tower app is compatible with Apple mobile phone devices running iOS 13.0 or later.
* The images were generated with the assistance of AI tools.

* Replaceable battery can be purchased through Samsung AS center.
* 12 hours of battery tested with lighting off and at a volume level of 12-13.
* The images were generated with the assistance of AI tools.

* Microphone not included.
* Two mic jacks included (for two microphones, or one microphone and one guitar).
* The images were generated with the assistance of AI tools.

Sound Quality

High Power 160 Watts

Boost your party with a maximum output of 160W

Turn up the volume and unleash a maximum 160 watts of sound with deep, dynamic bass. Whether indoors or outdoors, this large party speaker delivers rich audio that keeps the excitement going.

Waveguide

Feel a wider range of sound dispersion

Hear crisp, detailed treble evenly throughout the room. Waveguide technology optimizes sound dispersion from the dual tweeters, delivering more spacious, room-filling audio with enhanced clarity for elevated listening.

3 Bass Modes

Customize the bass to your preference

Set the bass the way you like it. Choose from three custom modes — Deep, Punchy and Gentle — to get the depth and punch that fit your sound, whether it’s a deep rumble, tight musical precision or balanced everyday listening.

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Usability

Splashproof IPX4

Let the party go on, come rain or shine

Enjoy outdoor fun with confidence. With the Sound Tower's water-resistant design, you can take the party outside without worrying about unexpected rain or accidental splashes from any angle.

* Sound Tower is protected against splashing water from any angle, but not against heavy rain.

Samsung Sound Tower App

Easily control the vibe and music from your mobile

Enhance your Sound Tower experience from your smartphone. The newly redesigned app makes adjusting lights and music effortless with an intuitive, user-friendly interface. Plus, the streamlined setup gets you straight to booming sound in no time.

* The Samsung Sound Tower app UI may differ by model.
* The Samsung Sound Tower app is compatible with Android mobile phone devices running Android OS 8.0 or later.
* The Samsung Sound Tower app is compatible with Apple mobile phone devices running iOS 13.0 or later.

Connectivity

Group Play with Auracast™

Blast music at full power

Take your party to the next level. Wirelessly connect up to ten Sound Towers via Auracast to create a big, powerful soundscape that fills the space and elevates your night to new heights.

* Group Play with Auracast™ controls each Sound Tower individually for ST40F and ST50F only.
* In wireless mode, playback quality may vary depending on Bluetooth® signal conditions.

Stereo Play with TWS

Amplify your TV audio with True Wireless Stereo

Elevate your TV or mobile viewing with immersive stereo sound. Simply place two speakers on either side of the screen and activate stereo mode using the button or app. True wireless stereo technology delivers rich, realistic audio that brings scenes to life.

* Works with two identical Sound Tower models for ST40F and ST50F only.

Bluetooth® Multi Connection

Connect two smartphones, double the fun

Connect up to two smartphones to your Sound Tower simultaneously and switch between your favorite playlists. Bluetooth multi-pairing allows for seamless transitions between devices so the music never stops.

* Bluetooth Multi Connection support may vary depending on the specifications of the connected device.
* Removable or detachable Bluetooth devices (e.g., dongles), Windows phones, laptops, TVs, and similar devices do not support Bluetooth Multi Connection.

USB input

Easily stream music from external devices

Enjoy instant playback with the built-in USB port. Just connect a compatible device and start listening.