Best For
Best Overall Experience
LG 43UA73006LA
Best for Streaming
LG 43UA73006LA
Best for Gaming Connectivity
LG 43UR78006LK
Better AI Picture Processing
LG 43UA73006LA
Best Value
LG 43UA73006LA
The LG 43UA73006LA and LG 43UR78006LK are both 43-inch 4K Smart TVs designed for everyday entertainment, streaming, and casual gaming. While they share key features such as 4K resolution, HDR10 support, WebOS, and 20W speakers, there are notable differences under the hood. The newer 43UA73006LA comes with the latest α7 AI Processor 4K Gen8, WebOS 25, enhanced AI picture and sound processing, and longer software support. Meanwhile, the 43UR78006LK offers HDMI 2.1 connectivity and support for 4K 120Hz signals, making it appealing for gamers with compatible devices. Choosing between them depends on whether you prioritize smarter processing or gaming-focused connectivity.
Verdict
For most buyers, the LG 43UA73006LA is the stronger overall choice. Its newer processor, improved AI upscaling, advanced audio processing, newer WebOS version, and longer security support make it a better long-term investment for streaming and everyday viewing.
The LG 43UR78006LK remains a solid option for users who specifically want HDMI 2.1 connectivity and potential compatibility with higher-refresh-rate gaming devices. However, for overall picture intelligence, software experience, and future-proofing, the 43UA73006LA takes the lead.
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| Model No |
43UR78006LK |
43UA73006LA |
| TV Type |
Smart TV |
Smart TV |
| Screen Size |
43 Inch (109.22 cm) |
43 Inch (109.22 cm) |
| Resolution |
4K 3840 x 2160 |
4K 3840 x 2160 |
| Aspect Ratio |
16:9 |
16:9 |
| Motion Rate |
50 Hz |
60 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, WebP, JPS, MPO |
|
| 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, WebP, JPS, MPO |
|
| Video |
| BackLight |
: 4K UHD DIRECT LED |
| HLG |
: Yes |
| HDR10 |
: Yes |
| Filmmaker Mode™ |
: Yes |
| AI Brightness Control |
: Yes |
| Dynamic Tone Mapping |
: Yes |
| AI Upscaling |
: 4K Upscaling |
| Picture Processor |
: α5 AI Processor 4K Gen6 |
| Picture Mode |
: 9 Modes ( Vivid, Standard, Eco, Cinema, Sports, Game, Filmmaker, ISF Bright Room, ISF Dark Room ) |
|
| BackLight |
: 4K UHD Direct LED |
| HLG |
: Yes |
| HDR10 |
: Yes |
| Auto Calibration |
: Yes |
| Filmmaker Mode™ |
: Yes |
| Dynamic Tone Mapping |
: Yes |
| AI Upscaling |
: 4K Super Upscaling |
| Picture Processor |
: α7 AI Processor 4K Gen8 |
| 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 ) |
: 20 W |
| LG Sound Sync |
: Yes |
| Clear Voice Pro |
: Yes |
| Sound Mode Share |
: Yes |
| Simultaneous Audio Output |
: Yes |
| AI Acoustic Tuning |
: Ready |
| Speaker Direction |
: Down Firing |
| Speaker System |
: 2.0 Channel |
| Bluetooth Surround Ready |
: Yes ( 2 Way Playback ) |
| AI Sound |
: AI Sound ( Virtual 5.1 Up-Mix ) |
| Audio Codec |
: AC4, AC3 ( Dolby Digital ), EAC3, HE-AAC, AAC, MP2, MP3, PCM, WMA, apt-X ( Refer To Manual ) |
|
| Audio Output ( RMS ) |
: 20 W |
| LG Sound Sync |
: Yes |
| WOW Orchestra |
: Yes |
| Sound Mode Share |
: Yes |
| Simultaneous Audio Output |
: Yes |
| Speaker Direction |
: Down Firing |
| Speaker System |
: 2.0 Channel |
| Bluetooth Surround Ready |
: Yes ( 2 Way Playback ) |
| Clear Voice Pro |
: Yes ( Auto Volume Leveling ) |
| AI Sound |
: α7 AI Sound Pro ( Virtual 9.1.2 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 ) |
: 3 ( Supports 4K 120Hz, VRR, ALLM As Specified In HDMI 2.1 On All Ports ) |
| USB ( 2.0 ) |
: 2 |
| CI Slot |
: 1 |
| Ethernet / LAN |
: 1 |
| RF Input ( Antenna, Cable ) |
: 2 |
| Optical Digital Audio Out ( SPDIF ) |
: 1 |
| Wi-Fi 5 |
: Yes |
| Bluetooth 5.0 |
: Yes |
| HDMI-CEC ( Simplink ) |
: Yes |
| HDMI Audio Return Channel |
: eARC ( HDMI 2 ) |
|
| HDMI ( 2.0 ) |
: 3ea ( Supports eARC, ALLM ) |
| USB ( 2.0 ) |
: 2ea |
| Ethernet / LAN |
: 1ea |
| RF Input ( Antenna, Cable ) |
: 2ea |
| Optical Digital Audio Out ( SPDIF ) |
: 1ea |
| Wi-Fi 5 |
: Yes |
| Bluetooth 5.1 |
: Yes |
| HDMI-CEC ( Simplink ) |
: Yes |
| HDMI Audio Return Channel |
: eARC ( HDMI 2 ) |
| CI Slot |
: 1ea ( Except For UK,Ireland ) |
|
| Smart TV Features |
| Operating System |
: WebOS 23 Smart TV |
| ThinQ |
: Yes |
| Sports Alert |
: Yes |
| LG Channels |
: Yes |
| Family Settings |
: Yes |
| Full Web Browser |
: Yes |
| USB Camera Compatible |
: Yes |
| Works With Apple Airplay2 |
: Yes |
| Intelligent Voice Recognition |
: Yes |
| Magic Remote Control |
: Ready |
| The Security Update Is Supported Until |
: 31/12/2027 |
| Smartphone Remote App |
: Yes ( LG ThinQ ) |
| Content Partners |
: Netflix, Max, Disney+, YouTube, Prime Video, ESPN, Apple TV, Sling TV & More............... |
|
| Operating System |
: WebOS 25 Smart TV |
| AI Chatbot |
: Yes |
| Home Hub |
: Yes |
| Google Cast |
: Yes |
| LG Channels |
: Yes |
| Full Web Browser |
: Yes |
| Google Home, Hub |
: Yes |
| Works With Apple Home |
: Yes |
| USB Camera Compatible |
: Yes |
| Works With Apple Airplay |
: Yes |
| The Security Update Is Supported Until |
: 31/12/2029 |
| Smartphone Remote App |
: Yes ( LG ThinQ ) |
| Voice ID |
: Ready ( Requires Magic Remote ) |
| Intelligent Voice Recognition |
: Ready ( Requires Magic Remote ) |
| Content Partners |
: Netflix, Max, Disney+, YouTube, Prime Video, ESPN, Apple TV, Sling TV & More............... |
|
| Other Features |
| Design |
: Slim Profile & Bezel Design |
| Gray Scale |
: Yes |
| Invert Colors |
: Yes |
| High Contrast |
: Yes |
|
| Design |
: Ultra Big Screen TV 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 |
: 64.8 - 99 W |
| Power Consumption Standby |
: Under 0.5 W |
| TV Weight Without Stand |
: 8.8 Kg |
| TV Weight With Stand |
: 8.9 Kg |
| Packaging Weight |
: 10.7 Kg |
| VESA Mounting |
: 200 mm X 200 mm |
|
| Power Supply |
: AC 100~240V 50-60Hz |
| Power Consumption |
: 54 - 75 W |
| Power Consumption Standby |
: Under 0.5 W |
| TV Weight Without Stand |
: 6.7 Kg |
| TV Weight With Stand |
: 6.8 Kg |
| Packaging Weight |
: 9.1 Kg |
| VESA Mounting |
: 300 mm X 300 mm |
|
| Supplied Accessories |
| Remote Control |
: Standard Remote Control |
| Power Cable |
: Yes ( Detachable ) |
| AAA X 2 Batteries |
: Yes |
|
| Remote Control |
: Standard Remote Control |
| Power Cable |
: Yes ( TV Attached ) |
|
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Compare LG 43UR78006LK with:
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Compare LG 43UA73006LA with:
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Frequently Asked Questions
Which product is better for gaming?
The LG 43UR78006LK is better for gamers who want HDMI 2.1 connectivity and support for advanced gaming features, while the LG 43UA73006LA is better for casual gaming with improved AI processing.
Does LG 43UA73006LA support Dolby Atmos?
The specifications mention Dolby Digital support and AI Sound Pro virtual surround processing, but native Dolby Atmos support is not listed.
Which TV has the newer operating system?
The LG 43UA73006LA runs WebOS 25, while the LG 43UR78006LK uses WebOS 23, making the UA73006LA the newer platform.
Which TV offers better picture processing?
The LG 43UA73006LA features the newer α7 AI Processor 4K Gen8 and enhanced 4K Super Upscaling, providing more advanced picture optimization.
Which TV will receive updates for a longer period?
The LG 43UA73006LA has security support listed until December 2029, compared to December 2027 for the LG 43UR78006LK.
Are both TVs suitable for streaming apps?
Yes, both models support popular apps such as Netflix, YouTube, Disney+, Prime Video, Apple TV, and more through LG's WebOS platform.
Top Differences- Refresh Rate: 60 Hz Vs 50 Hz
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