| Model No |
55UA8450PSA |
55S546 |
| 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 |
60 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, AC3, AAC, AC4 |
| Supported Video Formats |
: AVI, DIV, MPEG-4, MPEG-H, MP4, VC-1, VP8, PP9 |
| Supported Picture Formats |
: JPEG, PNG ,BMP, HEIF |
|
| Video |
| 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 )) |
|
| Backlight |
: 4K HDR QLED TV |
| HDR10+ |
: Yes |
| HDR10 |
: Yes |
| HLG |
: Yes |
| Dolby Vision |
: Yes |
| Natural Motion |
: 240 |
| Resolution |
: UHD |
| Display Colors |
: 1.07 Billion |
| Picture Engine |
: AiPQ Engine |
|
| Audio |
| Audio Output ( RMS ) |
: 20 W |
| LG Sound Sync |
: Yes |
| WOW Orchestra |
: Yes |
| Sound Mode Share |
: Yes |
| AI Acoustic Tuning |
: 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 ) |
|
| Audio Output ( RMS ) |
: 8 W + 8 W |
| Dolby Processing |
: Dolby Atmos |
| Audio Passthrough |
: Dolby Atmos / Dolby Digital Plus / Dolby Digital |
|
| Connectivity Options |
| HDMI ( 2.0 ) |
: 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 ) |
|
| HDMI 2.0 |
: 3 ( 1 With eARC ) |
| USB 2.0 |
: 1 |
| Ethernet / LAN |
: 1 Yes |
| RF Input ( NTSC, ATSC ) |
: 1 Yes |
| Audio Output Headphone |
: 1 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 ) |
|
| Smart TV Features |
| 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 |
| Works With Apple Home |
: Yes |
| USB Camera Compatible |
: Yes |
| Works With Apple Airplay |
: Yes |
| Intelligent Voice Recognition |
: Yes |
| Magic Remote Control |
: Built-In |
| Smartphone Remote App |
: Yes ( LG ThinQ ) |
| Content Partners |
: Netflix, Max, Disney+, YouTube, Prime Video, ESPN, Apple TV, Sling TV & More............... |
|
| Operating System |
: Google TV |
| Chromecast Built-In |
: Yes |
| Auto Game Mode ( ALLM ) |
: Yes |
| Advanced PQ Setting With Mobile App |
: Yes |
| Integrated Hands-Free Voice Assistant |
: Google Assistant |
| Variable Refresh Rate ( VRR ) |
: 48Hz - 60Hz @ 4K |
| Easy Voice Control |
: Works With Siri, Alexa, And Hey Google |
|
| Other Features |
| Design |
: Sleek & 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 ) |
|
| Sleep Timer |
: Yes |
| Closed Caption |
: Yes |
| 1 Year Limited Warranty |
: Yes |
| Parental Control ( V-Chip ) |
: Yes |
| Accessible Menu System ( CVAA ) |
: Yes |
| Control Buttons |
: One Button |
| Multilingual On-Screen-Display |
: English, Spanish, French |
| Tuner Type |
: ATSC / NTSC / Clear QAM |
| Live TV Pause From Antenna ( Up To 30 Minutes ) |
: Yes ( Compatible With USB Drive ) |
| Design |
: Full View Edge-To-Edge Glass Design |
|
| General Details |
| Power Supply |
: AC 100~240V 50-60Hz |
| Power Consumption |
: 110 W |
| 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 |
|
| Power Supply (Voltage, Hz) |
: AC 100V-240V 50/60Hz |
| Annual Power Consumption |
: 274 kWh/Y |
| Power Consumption Standby |
: ＜0.5 W |
| Weight Without Stand |
: 15.60 Kg |
| Weight With Stand |
: 15.78 Kg |
| Packaging Weight |
: 20.41 Kg |
| VESA Walll Mount Pattern |
: 200 mm X 300 mm |
|
| Supplied Accessories |
| Remote Control |
: Magic Remote MR25 |
| Power Cable |
: Yes ( Detachable ) |
|
| Remote Control |
: RC902N |
| 2 AAA Batteries |
: Yes |
| Screw Size |
: M6 X 12 |
| Warranty Info / Quick Start Guide (QSG) |
: Yes English |
| Power Cord Type |
: Detachable |
|
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Compare LG 55UA8450PSA with:
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Compare TCL 55S546 with:
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Key Differences
Both TVs come with smart platforms that support popular streaming apps and voice control features. TCL 55S546 and LG 55UA8450PSA are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users. Audio output differs between the two (8 W + 8 W vs 20 W), which can influence overall sound clarity and loudness. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. 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. TCL 55S546 and LG 55UA8450PSA differ in resolution (UHD vs 4K 3840 x 2160), which can affect overall clarity and sharpness of the display. Verdict: Both TVs are strong contenders, and your final choice should depend on your preference for screen size, motion performance, and smart features.
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