| Model No |
55S531-CA |
55UA7900YUA |
| 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 |
240 Hz |
60 Hz |
| Viewing Angle |
178°/178° |
178°/178° |
| USB |
| USB Version |
: 2.0 |
| Supported Audio Formats |
: MP3, AC3, AAC, AC4 |
| Supported Video Formats |
: AVI, DIV, MPEG-4, MPEG-H, MP4, VC-1, VP8, PP9 |
| Supported Picture Formats |
: JPEG, PNG ,BMP, HEIF |
|
| 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 HDR QLED TV |
| HDR10 |
: Yes |
| HLG |
: Yes |
| Dolby Vision |
: Yes |
| Natural Motion |
: 240 |
| Resolution |
: UHD |
| Contrast Control Zones |
: 80 zones |
| Display Colors |
: 1.07 Billion |
| Picture Engine |
: AiPQ Engine |
|
| BackLight |
: 4K UHD Direct LED |
| HLG |
: Yes |
| HDR10 |
: Yes |
| Auto Calibration |
: Yes |
| Filmmaker Mode |
: Yes |
| Dynamic Tone Mapping |
: Yes |
| 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 ) |
: 8 W + 8 W |
| Dolby Processing |
: Dolby Digital Plus |
| Audio Passthrough |
: Dolby Digital Plus |
|
| Audio Output ( RMS ) |
: 20 W |
| Dolby Atmos |
: Yes |
| LG Sound Sync |
: Yes |
| WOW Orchestra |
: Yes |
| AI Acoustic Tuning |
: 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 2.0 |
: 4 ( 1 eARC ) |
| USB 2.0 |
: 1 |
| Ethernet / LAN |
: 1 Yes |
| RF Input ( NTSC, ATSC ) |
: 1 Yes |
| Audio Output ( 3.5 mm ) |
: Yes |
| SPDIF Digital Audio Optical |
: 1 Yes |
| WiFi |
: 802.11ac 2X2 Dual Band ( Supports 2.4GHz & 5GHz ) |
| AV Input |
: Composite Video + L&R Audio In ( Mini 3.5 mm Connector ) |
|
| HDMI ( 2.1 ) |
: 3ea ( Supports eARC, ALLM ) |
| USB ( 2.0 ) |
: 1ea |
| Ethernet / LAN |
: 1ea |
| RF Input ( Antenna, Cable ) |
: 1ea |
| Optical Digital Audio Out ( SPDIF ) |
: 1ea |
| Wi-Fi 5 |
: Yes |
| Bluetooth 5.0 |
: Yes |
| HDMI-CEC ( Simplink ) |
: Yes |
| HDMI Audio Return Channel |
: eARC ( HDMI 2 ) |
|
| Smart TV Features |
| Operating System |
: Roku TV |
| Roku Mobile App |
: Yes |
| Auto Game Mode ( ALLM ) |
: Yes |
| Advanced PQ Setting With Mobile App |
: Yes |
| Easy Voice Control |
: Works With Siri, Alexa, And Hey Google |
|
| Operating System |
: WebOS 25 Smart TV |
| Voice ID |
: Yes |
| AI Chatbot |
: Yes |
| Home Hub |
: Yes |
| Google Cast |
: Yes |
| Full Web Browser |
: Yes |
| Google Home, Hub |
: Yes |
| USB Camera Compatible |
: Yes |
| Works With Apple Home |
: Yes |
| Works With Apple Airplay |
: Yes |
| Intelligent Voice Recognition |
: Yes |
| Magic Remote Control Built-In |
: Yes |
| Smartphone Remote App |
: Yes ( LG ThinQ ) |
|
| Other Features |
| Sleep Timer |
: Yes |
| Closed Caption |
: Yes |
| 1 Year Limited Warranty |
: Yes |
| Parental Control ( V-Chip ) |
: Yes |
| Accessible Menu System ( CVAA ) |
: Yes |
| Live TV Pause From Antenna ( Up To 30 Minutes ) |
: Yes |
| Control Buttons |
: One Button |
| Multilingual On-Screen-Display |
: English, Spanish, French |
| Tuner Type |
: ATSC / NTSC / Clear QAM |
| Design |
: Full View Edge-To-Edge Glass Design |
|
| Design |
: Sleek Slim Design |
| Gray Scale |
: Yes |
| Invert Colors |
: Yes |
| High Contrast |
: Yes |
| Analog TV Reception |
: Yes |
| Limited Warranty |
: 1 Year Parts & Labor |
| Digital TV Reception |
: ATSC1.0 ( Terrestrial ), QAM ( Cable ) |
|
| General Details |
| Power Supply (Voltage, Hz) |
: AC 100V-240V 50/60Hz |
| Power Consumption Standby |
: ＜0.5 W |
| Weight Without Stand |
: 14.78 Kg |
| Weight With Stand |
: 15.10 Kg |
| Packaging Weight |
: 21.18 Kg |
| VESA Walll Mount Pattern |
: 300 mm X 200 mm |
|
| Power Supply |
: AC 120V, 50/60Hz |
| Power Consumption Standby |
: Under 0.5 W |
| TV Weight Without Stand |
: 11.5 Kg |
| TV Weight With Stand |
: 11.6 Kg |
| Packaging Weight |
: 15.8 Kg |
| VESA Mounting |
: 300 mm X 200 mm |
|
| Supplied Accessories |
| Remote Control |
: RC280 |
| 2 AAA Batteries |
: Yes |
| Screw Size |
: M6 X 20 |
| Warranty Info / Quick Start Guide (QSG) |
: Yes English |
| Power Cord Type |
: Detachable |
|
| Remote Control |
: Magic Remote Control MR25 |
| Power Cable |
: Yes ( Detachable ) |
|
|
Compare TCL 55S531-CA with:
|
Compare LG 55UA7900YUA with:
|
|
Both TVs come with smart platforms that support popular streaming apps and voice control features. Audio output differs between the two (8 W + 8 W vs 20 W), which can influence overall sound clarity and loudness. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing. TCL 55S531-CA and LG 55UA7900YUA differ in resolution (UHD vs 4K 3840 x 2160), which can affect overall clarity and sharpness of the display. TCL 55S531-CA and LG 55UA7900YUA offer different motion rates (240 Hz vs 60 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. TCL 55S531-CA and LG 55UA7900YUA are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Verdict: Both TVs are strong contenders, and your final choice should depend on your preference for screen size, motion performance, and smart features. Top Differences- Resolution: UHD Vs 4K 3840 x 2160
- Refresh Rate: 240 Hz Vs 60 Hz
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