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Cape Cod’s best Audio-Video & Connected Home Technology Experts
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LG CX 55 inch Class 4K Smart OLED TV w/ AI ThinQ® (54.6'' Diag)


 3.4 out of 5 (9 Reviews)

Our Price


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LG OLED TVs work seamlessly with NVIDIA G-SYNC®

Experience immersive gaming like never before. Only OLED TVs with NVIDIA G-SYNC* compatibility can provide the exceptional picture quality of perfect black and intense colors combined with smooth gameplay to take gaming to new heights.

HDMI speeds are faster than ever

A higher frame rate, VRR (Variable Refresh Rate), ALLM (Auto Low Latency Mode) and eARC (Enhanced Audio Return Channel) all meeting the latest HDMI specifications. These latest features allow fast-moving content in higher resolution and smooth, synchronized graphics. It's more lifelike gaming experience.

*Excludes RX and WX models. **Supports up to 40Gbps bandwidth, allowing up to 4K 120Hz 4:4:4 @ 10 bits per component.

Don't lag behind the competition

Dominate your way to victory with LG OLED TV. With a low input lag and fast 1ms response time, get ready to play in full-force with reduced blurring and added clarity. Feel truly in-game with high-speed motion and gameplay.

Turn up your HDR gaming experience

High Dynamic Range isn't just for movies. HDR gaming drops players right into the action for a new level of immersive gaming. LG has joined some of the biggest developers and tech companies in gaming to ensure the best HDR gaming experience.

*Screen images simulated.

The leading name in cinematic sight and sound

Dolby ups the action, driving their best-in-class HDR format to new cinematic heights. Dolby Vision IQ* automatically adjusts picture settings depending on ambient lighting conditions and content genres. Dolby Atmos® puts you in the middle of the action with multi-dimensional surround sound that seems to flow all around you.

*Dolby Vision is a trademark of Dolby Laboratories. Dolby, Dolby Atmos and the double-D symbol are registered trademarks of Dolby Laboratories.

See a director's vision for sound and picture settings

Film buffs can see what directors envisioned. Filmmaker Mode™ is a setting that respects the craft. It translates a director's cinematic vision to your TV with automatic picture and processor settings and brings true authenticity.

Curious about webOS" Take a quick tour

webOS is your portal to a world of entertainment. Learn about all the things you can do with your LG smart TV - easily stream your content, search for information and much more.

All your favorites, all in one place

Disney+ gives you full access to stream classics, binge on new Originals, or catch the latest movies. With Disney, Pixar, Marvel, Star Wars and more - there's something for everyone.

*Disney+ subscription required. Subject to terms at e 2020 Disney and its related entities.

The home of Apple TV+ and much more

Original shows and movies from Apple TV+. Just the premium channels you want and thousands of movies to buy or rent. It's personalized and expertly curated, so you'll discover the best of what's on. And it's all in the Apple TV app.

*Watch Apple TV+ with a subscription.

See more, stream more with LG Channels

LG OLED TVs are bringing more entertainment options than ever. LG Channels deliver free access to over 180 IP streaming channels offering movies, shows, breaking news, sports, comedy and more - integrated alongside over-the-air channels and channel guide.

See what makes the magic remote so magical

We'll show you how easy it is to access and control your LG smart TV. Customizable features, point-and-click, voice controls, it's all here. Get ready to be amazed.

Search for what you see

Instantly search the names of actors, venues, and even outfits worn on your favorite shows, you can even buy them on the spot, straight from your TV.

Sports Alert keeps you up to date on your favorite teams

Sports fans have a new way to stay informed. Sports Alert gives updates on your favorite teams, start times, and scores - even while you're watching other content. Easily switch to games without searching for the channel. NFL, NBA, MLB, NHL, Premier League and more - it's all here.

Fluid motion puts you in the moment

OLED Motion Pro is technology you see, but don't notice. It's our most advanced motion handling for fast movements in sports and action sequences. Kickoff returns look just as smooth at home as from 50-yard line seats, with less stuttering to slow down the big car chase.

*Screen images simulated. **Not supported on streaming content.

Connect Bluetooth® speakers for instant surround sound

Connecting LG Bluetooth speakers for wireless surround sound has never been easier. Connect up to two speakers, including LG XBoom Speakers, for a true surround sound experience - not a wire in sight.

*Connection Available: LG PK7/7W/5/5W, PL7/5, RL3, RM2, RN9/7/5, ON9/7/5.

Bundle Up Savings

Purchase a qualifying OLED or NanoCell TV and get a free PL5 Speaker. Valid 10/1-11/22/2020. Terms and conditions apply. ^

See how OLED redefines picture quality

Once you've seen LG OLED TV with your own eyes, you'll understand. It's stunning picture that redefines quality. Millions of OLED pixels emit their own light independently and can be completely turned off. This unveils perfect black, over a billion rich colors and infinite contrast. From the gridiron to the iron throne, no detail goes unseen.

*Calculation based on multiplying 8K resolution (7680 x 4320) and four sub-pixels.

See more of your content in 4K

Just because it wasn't filmed in 4K doesn't mean you can't see it that way. Our most advanced 4K processor uses AI and deep learning to authentically upscale lower resolution content, translating the source to 4K's 8.3+ million pixels. The technology is so good, you might mistake non-4K for true 4K*.

*Image quality of upscaled content will vary based on the source resolution.

World's most intelligent TVs

LG ThinQ AI TVs are the only TVs with the Google Assistant and Alexa built-in*. LG ThinQ fully integrates the voice assistants you already use. No need to buy a separate device. Convenience and connected home control are at your command, making it easy to control other smart devices and LG smart products.

See a work of artistic design

Perfect lines. Unbelievably thin bezel. Impossibly slim. Flexible by nature. LG OLED TVs are designed, crafted, and engineered to put the spotlight on your content, yet complement your home's interior even when it's turned off.


  • Self-lighting OLED: Perfect Black, Intense Color, Infinite Contrast
  • 9 Gen 3 AI Processor 4K with AI Picture Pro/Sound Pro
  • Dolby Vision IQ and Dolby Atmos
  • webOS + ThinQ AI w/ Magic Remote
  • Gaming: G-SYNC Compatible, FreeSync, VRR, ALLM
Display Type OLED
Display Resolution 4K Ultra HD (3,840 x 2,160)
Wide Viewing Angle Yes
Dimming Technology Pixel Level Dimming
Picture Processor 9 Gen 3 AI Processor 4K
Refresh Rate 120Hz (Native)
HDR (High Dynamic Range) Cinema HDR (Dolby Vision®, HDR10, HLG), Dolby Vision IQ, HDR Dynamic Tone Mapping Pro
Contrast Advanced Contrast Enhancer, Face Enhancing, Ultra Luminance Pro
Clarity Quad Step Noise Reduction, Frequency Based Sharpness Enhancer
Color Intense Color, Billion Rich Colors, Advanced Color Enhancer, True Color Accuracy Pro
Motion OLED Motion Pro
Resolution Upscaler AI Upscaling
G-SYNC Compatible Yes
FreeSync™ Yes
VRR (Variable Refresh Rate) Yes
ALLM (Auto Low Latency Mode) Yes
Response Time >1 ms
HGiG Yes
LG ThinQ® AI Yes
Google Google Assistant Built-in "Works with" Google Assistant
Alexa Alexa Built-in "Works with" Alexa
Apple Apple Airplay2, Apple Homekit
Intelligent Voice Recognition Yes
Home Dashboard Yes
AI Picture Pro / AI Picture AI Picture Pro
Auto Genre Selection Yes (SDR/HDR/Dolby HDR)
Operating System webOS
Magic Remote Control Yes (Point, Click, Scroll, Voice)
Universal Remote Control Yes (Auto Device Detection)
LG Channels Yes
LG Content Store (App Store) Yes
Full Web Browser Yes
Gallery Mode Yes
Sports Alert Yes
Speaker System 2.2 Channel
Output Power 40W (20W Woofer)
Speaker Direction Front Firing (Reflector)
AI Sound Pro / AI Sound AI Sound Pro
Dolby Atmos Yes
WiSA Ready Yes (Separate Dongle Purchase Required)
Surround Mode OLED Surround
Audio Codec AC4, AC3 (Dolby Digital), EAC3, HE-AAC, AAC, MP2, MP3, PCM, WMA, apt-X (refer to manual)
Bluetooth Surround Ready Yes
LG Sound Sync Yes
Wi-Fi® Standard Wi-Fi Certified 802.11ac
Bluetooth® Support Version 5.0
IP Control Yes
HDMI-CEC (Simplink) Yes
TV Tuner ATSC, Clear QAM
Smart Phone Connectivity Yes
HDMI Input (HDCP 2.2) 1 (rear) / 3 (side)
HDMI Audio Return Channel (ARC) eARC (HDMI 2)
USB Ports (v 2.0) 2 (rear) / 1 (side)
RF Connection Input (Antenna/Cable) 1 (rear)
AV Input 1 (rear) breakout cable required, not included
Ethernet Input 1 (rear)
RS-232C Input (Mini Jack) 1 (rear)
Digital Audio Output (Optical) 1 (rear)
Headphone Out 1 (rear)
Power Supply (Voltage, Hz) AC 120V, 50/60Hz
Standby Power Consumption Under 0.5W
TV Dimensions with Stand (WxHxD) 48.3" x 29.1" x 9.9"
TV Dimensions without Stand (WxHxD) 48.3" x 27.8" x 1.8"
Packaging Dimensions (WxHxD) 55.3" x 32.9" x 8.1"
Stand Width 39.3"
TV Weight with Stand 50.7 lbs
TV Weight without Stand 41.7 lbs
Packaging Weight 63.3 lbs
VESA Mounting (W x H) 300 x 200
UPC 719192637085
Remote Magic Remote
Remote Control Battery Yes
Power Cable Yes
Quick Start Guide Yes
E-Manual Yes
2020 Model Yes
Country of Origin Mexico
Limited Warranty 1 Year Parts & Labor

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy, and expensive and you probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Questions or Comments?
Call (508) 771-4434 for assistance. Click Here for Nantucket Sound location and contact information.

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Shop where you can see the finest selection of the best products available today to match your budget, needs, and style. Shop where experts can guide you through the myriad of options available and can answer your every question. Shop where you get exceptional service for the life of your electronics.

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out of 5 (9 Reviews)

66% of reviewers recommend this product.

Great display

Submitted by rupsawl - 11/15/2020

I bought this 4 days ago display is awesome. But the sound is okay. Planning to get a sound bar.
Originally posted on

Yes, I recommend this product

Gift box Incentivized Review

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Submitted by Abraxas - 11/7/2020

Sites like have the LG B9 rated very highly in most categories and say that its a great introductery level OLED because of the price. So I went ahead and purchased it from COSTCO. The first TV had some pixels burnt out so I exchanged it for a new one. The new TV was in good condition no pixels burnt out. Movies were incredibly vivid and was noticing so many details I never saw before. Same with games. Then I watched the Hunger Games 2 and in one of the scenes theres a ship that flies over trees and I started to see motion blur. Maybe it was just the movie? So I tried another movie and the same thing happened. I started noticing the LG B9 has a hard time keeping up with the motion of objects on screen and it wasnt a little motion blur. It was ALOT. To the point where it really started bothering me and taking away from the movie experience. Tried all the different settings and nothing fixed it. Next issue I noticed was the banding. Theres a great scene at the start of The Last Of Us 2 PS4 game that has a porchlight in the top right of the screen with a dark background and moths flying around the light. The ambience from the porchlight was clearly showing banding and instead of fluid images that gradually went from a lighter grey to black/dark like in real life there was a band around the light that was light grey then another band that was a little darker grey and so on. It wasnt a natural light ambience that looked realistic it just looked like one band of grey then another darker band and so on. I tried the pixel refresh a few times but nothing changed. So I started researching other TVs I was still within my 90 day return/exchange window and the LG CX caught my eye. has the LG B9 and the LG CX nearly rated the same in most categories so I wondered if it was even worth it. People online said that average viewers that arent trained to notice small differences will not notice a change between LG B9 and the LG CX. They often said the extra ~400$ wasnt worth it. Knowing what I know now in my opinion they were 100 WRONG. I went to COSTCO and went to see for myself. The LG CX looked sleek the details and color were so vivid compared to the B9. I knew Id have this TV for next 5 years and I wanted a TV with 4K 120 fps which the LG B9 doesnt support so I exchanged the B9 for the CX. I tried watching the movies with fast moving objects that the B9 had problems with and was pleasantly surprised to notice there was no motion blur at least nothing as noticeable as B9 and that when I turned on Last Of Us 2 the porch light ambience showed a fluid gradual contrast ambience around the light. No more banding It upscaled images 100 better than the B9 and the audio sound compared to the B9 was SUPERB. The CX TVs sound is SUPERB pretty darn close to having surround sound quality with incredible bass. I know I know who buys a 2000$+ TV and doesnt have surround sound?? Well Im also buying a PS5 so money is a bit tight right now. I was NOT expecting the quality of sound coming from the LG CX. I just wanted to write this review for others that might be considering exchanging/upgrading to the CX. In my opinion sites like RTings and Reddit where people say the difference between the B9 and CX are negligible are wrong. I noticed a difference between the two and Im no TV expert. In my opinion the extra few hundred dollars it 100 worth it for the upgraded image quality likely because of the better processing chip in the CX and sound quality. Also many stores have started their Black friday savings early this year due to the pandemic so I only ended up paying 150$ more for the CX compared to the B9. If you want a TV thats going to be able to keep up with the new console generation and a great all around experience with movies then buy the LG CX. Like me you might have this TV for years to come so dont settle for a budget TV or you might regret it later on...
Originally posted on

Yes, I recommend this product

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LG CX remote

Submitted by pat daprile - 11/2/2020

will the remote for this tv operate my reciever and dvd player? or am i destined to buy another Harmony one universal remote thanks pat
Originally posted on

Yes, I recommend this product

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Best tv ever

Submitted by DessiDanae - 10/8/2020

I have never realized how much detail I was truly missing by not investing in an OLED tv sooner This was worth every cent I paid for it. The first photo is a 2018 LED tv I own. The 2nd is the same time stamp on my oled. Unbelievable contrast
Originally posted on

Yes, I recommend this product

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HDMI 2.1 issue with 3080 4k120hz 444 gsync

Submitted by Drahk - 9/21/2020

So been using this tv since release with no issues. Beautiful pictures and loving it. So why the 1 Star? I use this tv in my game room. Its connected to all my console and pc. So with pc like the title stated 4k120hz 444 gsync just doesnt work well. Very disappointing since lg boast about gsync and their HDMI 2.1 secondly I bought this tv for 1 purpose and that is gaming. Hope an update comes and fix this.
Originally posted on

No, I do not recommend this product

Poor Build Quality Very Disappointing

Submitted by Comoled34 - 9/7/2020

Purchased this and less than 10 minutes into the install process found out that the stand/base wouldnt screw together. It takes three screws but one would never go in more than half way. Seems like the hole wasnt tapped correctly. Tried multiple angles pressures backing it out screwing in the others lightly first etc. and no dice. Fundamentally the stand just seems to be defective. Thus the install ended one hour after I received it. Does the TV even power on? Heck if I know. Called customer service and they immediately offered to send a new stand. Guessing they cheaped out in manufacturing and now have to repair these in the warranty stage. They stated it will arrive in 7-10 days which is 3x longer than the original shipping time so thats incredibly disappointing. Overall Ive never had a problem with a purchase this expensive before regarding simple stand installation. The CX is supposed to be the premium model and if the stand reflects the rest of the experience I dont think this TV is going to last long. Id highly advise buying a third party warranty based on my simple unboxing experience.
Originally posted on

No, I do not recommend this product

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Great TV EXCEPT ...

Submitted by benk51 - 7/18/2020

Very satisfied except for ONE MAJOR ANNOYANCE. Shortly after starting and randomly at times Meet Google Assistant screen that obliterates the entire screen pops up. It only offers one option - continue - no way to say NO or DONT ASK AGAIN. This screen should not pop up repeatedly after turning off once. Very frustrating
Originally posted on

Yes, I recommend this product

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Remote does not sync with Sonus Soundbar

Submitted by Hojohn1961 - 7/12/2020

I just purchased the 55CXPUA and the install with pretty easy. Very disappointed that a Sonus Soundbar connected with Optical Cable does not fully sync. Volume control will not work with the Magic Remote not very magical. Ive tried numerous fixes described but unable to even find the soundbar in the Device Connection Settings. Super disappointing for such a highly rated TV. Need a fix please.
Originally posted on

Yes, I recommend this product

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LG CX shutting down while using headphones

Submitted by RonK19 - 5/23/2020

I have a new LG CX 2020 and when I switch to bluetooth headphones the tv shuts down after about 10 min. I did a factory reset but it hasnt helped. Anyone have this problem?
Originally posted on

No, I do not recommend this product