Best For
Best for Gaming
LG OLED55C55LA
Better Home Theater Experience
LG OLED55C55LA
Best Smart TV Features
LG OLED55C55LA
Best Value During Discounts
LG OLED55C56LB
Best Overall OLED TV
LG OLED55C55LA
The LG OLED55C55LA and LG OLED55C56LB are two premium 55-inch OLED TVs that target users looking for flagship-level picture quality, advanced gaming support, and modern smart TV features. Both models come with a 4K OLED panel, 120Hz refresh rate, Dolby Vision, Dolby Atmos, HDMI 2.1 connectivity, and LG’s latest α9 AI Processor 4K Gen8. On paper, the two TVs are extremely similar, making the buying decision slightly tricky. However, subtle differences in tuning and feature positioning may matter depending on whether you prioritize gaming, cinematic viewing, or long-term value.
Verdict
For most buyers, both TVs deliver nearly identical real-world performance with excellent OLED contrast, smooth gaming performance, and premium smart features. The LG OLED55C55LA edges ahead slightly thanks to features like WiSA Ready support and OLED Dynamic Tone Mapping Pro, making it a better pick for home theater enthusiasts and gamers wanting a more complete premium package. The OLED55C56LB remains a solid alternative if priced lower during sales or bundled offers.
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| Model No |
OLED55C56LB |
OLED55C55LA |
| TV Type |
Smart TV |
Smart TV |
| Screen Size |
55 Inch (139 cm) |
55 Inch (139 cm) |
| Resolution |
4K 3840 x 2160 |
4K 3840 x 2160 |
| Aspect Ratio |
16:9 |
16:9 |
| Motion Rate |
120 Hz |
120 Hz |
| Viewing Angle |
178°/178° |
178°/178° |
| USB |
| USB Version |
: 2.0 |
| Supported Audio Formats |
: MP3, AC4, AC3, EAC3, AAC, MP2, PCM, WMA |
| Supported Video Formats |
: MKV, DivX, MP4, AVI, ASF, MOV, FLV |
| Supported Picture Formats |
: JPEG, PNG, BMP |
|
| USB Version |
: 2.0 |
| Supported Audio Formats |
: MP3, AC4, AC3, EAC3, AAC, MP2, PCM, WMA |
| Supported Video Formats |
: MKV, DivX, MP4, AVI, ASF, MOV, FLV |
| Supported Picture Formats |
: JPEG, PNG, BMP |
|
| Video |
| Backlight |
: 4K UHD OLED |
| HLG |
: Yes |
| HDR10 |
: Yes |
| Dolby Vision |
: Yes |
| AI Picture Pro |
: Yes |
| Filmmaker Mode™ |
: Yes |
| AI Brightness Control |
: Yes |
| Quick Media Switching ( QMS ) |
: Yes |
| LED Dynamic Tone Mapping Pro |
: Yes |
| Wide Color Gamut |
: OLED Colour |
| Motion |
: OLED Motion |
| Dimming Technology |
: Pixel Dimming |
| AI Genre Selection |
: Yes ( SDR / HDR ) |
| Picture Processor |
: α9 AI Processor 4K Gen8 |
| AI Upscaling |
: α9 AI Super Upscaling 4K |
| Refresh Rate |
: 120Hz Native ( VRR 144Hz ) |
| High Frame Rate ( HFR ) |
: 4K 120 Fps ( HDMI, RF, USB ) |
| Picture Mode |
: 10 Modes ( Personalized Picture Wizard, Vivid, Standard, Eco, Cinema, Sports, Game, Filmmaker, ( ISF ) Expert ( Bright Room ), ( ISF ) Expert ( Dark Room )) |
|
| Backlight |
: 4K UHD OLED |
| HLG |
: Yes |
| HDR10 |
: Yes |
| Dolby Vision |
: Yes |
| AI Picture Pro |
: Yes |
| Filmmaker Mode™ |
: Yes |
| AI Brightness Control |
: Yes |
| Quick Media Switching ( QMS ) |
: Yes |
| OLED Dynamic Tone Mapping Pro |
: Yes |
| Wide Color Gamut |
: OLED Colour |
| Motion |
: OLED Motion |
| Dimming Technology |
: Pixel Dimming |
| AI Genre Selection |
: Yes ( SDR / HDR ) |
| Picture Processor |
: α9 AI Processor 4K Gen8 |
| AI Upscaling |
: α9 AI Super Upscaling 4K |
| Refresh Rate |
: 120Hz Native ( VRR 144Hz ) |
| High Frame Rate ( HFR ) |
: 4K 120 Fps ( HDMI, RF, USB ) |
| Picture Mode |
: 10 Modes ( Personalized Picture Wizard, Vivid, Standard, Eco, Cinema, Sports, Game, Filmmaker, ( ISF ) Expert ( Bright Room ), ( ISF ) Expert ( Dark Room )) |
|
| Audio |
| Audio Output ( RMS ) |
: 40 W |
| Dolby Atmos |
: Yes |
| LG Sound Sync |
: Yes |
| WOW Orchestra |
: Yes |
| AI Acoustic Tuning |
: Yes |
| Sound Mode Share |
: Yes |
| Simultaneous Audio Output |
: Yes |
| Speaker System |
: 2.2 Channel |
| Speaker Direction |
: Down Firing |
| Bluetooth Surround Ready |
: Yes ( 2 Way Playback ) |
| Clear Voice Pro |
: Yes ( AI Voice Remastering ) |
| AI Sound |
: α9 AI Sound Pro ( Virtual 11.1.2 Up-Mix ) |
| Audio Codec |
: AC4, AC3 ( Dolby Digital ), EAC3, HE-AAC, AAC, MP2, MP3, PCM, WMA, apt-X ( Refer To Manual ) |
|
| Audio Output ( RMS ) |
: 40 W |
| Dolby Atmos |
: Yes |
| LG Sound Sync |
: Yes |
| WOW Orchestra |
: Yes |
| AI Acoustic Tuning |
: Yes |
| Sound Mode Share |
: Yes |
| Simultaneous Audio Output |
: Yes |
| Speaker System |
: 2.2 Channel |
| Speaker Direction |
: Down Firing |
| Bluetooth Surround Ready |
: Yes ( 2 Way Playback ) |
| WiSA Ready |
: Yes ( Up To 2.1 Channel ) |
| Clear Voice Pro |
: Yes ( AI Voice Remastering ) |
| AI Sound |
: α9 AI Sound Pro ( Virtual 11.1.2 Up-Mix ) |
| Audio Codec |
: AC4, AC3 ( Dolby Digital ), EAC3, HE-AAC, AAC, MP2, MP3, PCM, WMA, apt-X ( Refer To Manual ) |
|
| Connectivity Options |
| HDMI 2.1 |
: 4ea ( Supports 4K 120Hz, eARC, VRR, ALLM, QMS ( 4 Port )) |
| USB 2.0 |
: 3ea |
| Ethernet / LAN |
: 1ea |
| RF Input ( Antenna / Cable ) |
: 2ea |
| Optical Digital Audio Out ( SPDIF ) |
: 1ea |
| Wi-Fi 6 |
: Yes |
| Bluetooth 5.3 |
: Yes |
| Simplink ( HDMI CEC ) |
: Yes |
| HDMI Audio Return Channel |
: eARC ( HDMI 2 ) |
| CI Slot |
: 1ea ( Except For UK,Ireland ) |
|
| HDMI 2.1 |
: 4ea ( Supports 4K 120Hz, eARC, VRR, ALLM, QMS ( 4 Port )) |
| USB 2.0 |
: 3ea |
| Ethernet / LAN |
: 1ea |
| RF Input ( Antenna / Cable ) |
: 2ea |
| Optical Digital Audio Out ( SPDIF ) |
: 1ea |
| Wi-Fi 6 |
: Yes |
| Bluetooth 5.3 |
: Yes |
| Simplink ( HDMI CEC ) |
: Yes |
| HDMI Audio Return Channel |
: eARC ( HDMI 2 ) |
| CI Slot |
: 1ea ( Except For UK,Ireland ) |
|
| Smart TV Features |
| Operating System |
: WebOS 25 Smart TV |
| Voice ID |
: Yes |
| Multi View |
: Yes |
| Home Hub |
: Yes |
| AI Chatbot |
: Yes |
| Google Cast |
: Yes |
| LG Channels |
: Yes |
| Always Ready |
: Yes |
| Full Web Browser |
: Yes |
| Google Home, Hub |
: Yes |
| Works With Apple Home |
: Yes |
| USB Camera Compatible |
: Yes |
| Works With Apple Airplay |
: Yes |
| Hands-Free Voice Control |
: Yes |
| Intelligent Voice Recognition |
: Yes |
| Magic Remote Control |
: Built-In |
| The Security Update Is Supported Until |
: 31/12/2029 |
| Smartphone Remote App |
: Yes ( LG ThinQ ) |
|
| Operating System |
: WebOS 25 Smart TV |
| Voice ID |
: Yes |
| Multi View |
: Yes |
| Home Hub |
: Yes |
| AI Chatbot |
: Yes |
| Google Cast |
: Yes |
| LG Channels |
: Yes |
| Always Ready |
: Yes |
| Full Web Browser |
: Yes |
| Google Home, Hub |
: Yes |
| Works With Apple Home |
: Yes |
| USB Camera Compatible |
: Yes |
| Works With Apple Airplay |
: Yes |
| Hands-Free Voice Control |
: Yes |
| Intelligent Voice Recognition |
: Yes |
| Magic Remote Control |
: Built-In |
| The Security Update Is Supported Until |
: 31/12/2029 |
| Smartphone Remote App |
: Yes ( LG ThinQ ) |
|
| Other Features |
| Design |
: Ultra Slim Design |
| Gray Scale |
: Yes |
| Invert Colors |
: Yes |
| High Contrast |
: Yes |
| Analog TV Reception |
: Yes |
| Digital TV Reception |
: DVB-T2/T ( Terrestrial ), DVB-C ( Cable ), DVB-S2/S ( Satellite ) |
|
| Design |
: Ultra Slim Design |
| Gray Scale |
: Yes |
| Invert Colors |
: Yes |
| High Contrast |
: Yes |
| Analog TV Reception |
: Yes |
| Digital TV Reception |
: DVB-T2/T ( Terrestrial ), DVB-C ( Cable ), DVB-S2/S ( Satellite ) |
|
| General Details |
| Power Supply |
: AC 100~240V 50-60Hz |
| Power Consumption Standby |
: Under 0.5 W |
| Weight Without Stand |
: 14.1 Kg |
| Weight With Stand |
: 16.0 Kg |
| Packaging Weight |
: 21.3 Kg |
| VESA Mounting |
: 300 mm X 200 mm |
|
| Power Supply |
: AC 100~240V 50-60Hz |
| Power Consumption Standby |
: Under 0.5 W |
| Weight Without Stand |
: 14.1 Kg |
| Weight With Stand |
: 16.0 Kg |
| Packaging Weight |
: 21.3 Kg |
| VESA Mounting |
: 300 mm X 200 mm |
|
| Supplied Accessories |
| Remote Control |
: Magic Remote MR25GA, MR25GB ( UK, Italy ) |
| Power Cable |
: Yes ( TV Attached ) |
|
| Remote Control |
: Magic Remote MR25GA, MR25GB ( UK, Italy ) |
| Power Cable |
: Yes ( TV Attached ) |
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Compare LG OLED55C56LB with:
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Compare LG OLED55C55LA with:
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Frequently Asked Questions
Which product is better for gaming?
Both TVs are excellent for gaming with 4K 120Hz, VRR, G-Sync, FreeSync, and HDMI 2.1 support, but the LG OLED55C55LA has a slight advantage due to its enhanced OLED Dynamic Tone Mapping Pro support.
Does LG OLED55C55LA support Dolby Atmos?
Yes, the LG OLED55C55LA supports Dolby Atmos along with AI Sound Pro and WOW Orchestra for immersive audio performance.
Are both TVs suitable for PS5 and Xbox Series X?
Yes, both models are fully compatible with modern gaming consoles and support advanced gaming technologies like ALLM, VRR, and Dolby Vision Gaming.
Is there any major difference in picture quality?
Picture quality is extremely similar on both TVs since they use OLED panels and the same α9 AI Processor Gen8, though the OLED55C55LA may offer slightly better HDR tone mapping performance.
Which TV is better for movies and OTT streaming?
The LG OLED55C55LA is slightly better for movie lovers due to its advanced HDR processing and premium audio ecosystem support.
Do both TVs run on the same smart TV platform?
Yes, both models use WebOS 25 and support features like Google Cast, Apple AirPlay, voice control, and LG ThinQ integration.
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