| Model No |
OLED77B42LA |
75QM9K |
| TV Type |
Smart TV |
Smart TV |
| Screen Size |
77 Inch (195.58 cm) |
75 Inch (191 cm) |
| Resolution |
4K 3840 x 2160 |
4K 3840 x 2160 |
| Aspect Ratio |
16:9 |
16:9 |
| Motion Rate |
120 Hz |
144 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 |
: 3.0, 2.0 |
| Supported Audio Formats |
: AAC, MP3, WMA, WAV ( PCM ), AIFF, FLAC, AC3 |
| Supported Video Formats |
: MKV ( H.264 ), MP4, MOV ( H.264 ), TS ( H.264 ) |
| Supported Picture Formats |
: JPEG, PNG, GIF |
|
| Video |
| Backlight |
: 4K UHD OLED |
| HLG |
: Yes |
| HDR10 |
: Yes |
| Dolby Vision |
: Yes |
| Filmmaker Mode™ |
: Yes |
| AI Brightness Control |
: Yes |
| 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 |
: α8 AI Processor 4K |
| High Frame Rate ( HFR ) |
: 4K 120 Fps ( HDMI ) |
| AI Upscaling |
: α8 AI Super Upscaling 4K |
| 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 QD-Mini LED QLED |
| HLG |
: Yes |
| HDR 10 |
: Yes |
| HDR 10+ |
: Yes |
| Dolby Vison IQ |
: Yes |
| Filmmaker Mode |
: Yes |
| Quantum Dot Technology |
: Yes |
| Display Colors |
: 1.07 Billion Colors |
| Brightness |
: Up To HDR 6500 Nits |
| Panel Type |
: CrystGlow WHVA Panel |
| Picture Engine |
: TCL AIPQ PRO Processor |
| Description |
: The New, Ultimate Choice |
| Dimming Zones |
: Up To LD6000 Precise Dimming |
| Motion Enhancement Technology |
: Motion Rate 480 With MEMC Frame Insertion |
|
| Audio |
| Audio Output ( RMS ) |
: 20 W |
| LG Sound Sync |
: Yes |
| Dolby Atmos |
: Yes |
| AI Acoustic Tuning |
: Yes |
| Sound Mode Share |
: Yes |
| Simultaneous Audio Output |
: Yes |
| Speaker System |
: 2.0 Channel |
| Speaker Direction |
: Down Firing |
| Bluetooth Surround Ready |
: Yes ( 2 Way Playback ) |
| WiSA Ready |
: Yes ( Up To 2.1 Channel ) |
| Clear Voice Pro |
: Yes ( Auto Volume Leveling ) |
| AI Sound |
: α8 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 ) |
: NA |
| Dolby Atmos Audio |
: Yes |
| Bluetooth Personal Audio |
: Yes |
| IMAX Enhanced Certification |
: Yes |
| Dolby Atmos Flex Connect Capable |
: Yes |
| Dolby Processing |
: Dolby Digital+ |
| Speaker System |
: Audio By BANG & OLUFSEN |
| Audio Presets |
: Movie, Speech, Music, Game, Night, Sports, Custom |
| Audio Passthrough |
: Dolby Atmos, Dolby Digital+, Dolby Digital, DTS:X, PCM |
|
| Connectivity Options |
| HDMI 2.1 |
: 4ea ( Supports 4K 120Hz, eARC, VRR, ALLM, QMS ( 4 Port )) |
| USB 2.0 |
: 2ea |
| CI Slot |
: 1ea |
| Ethernet / LAN |
: 1ea |
| RF Input ( Antenna / Cable ) |
: 2ea |
| Optical Digital Audio Out ( SPDIF ) |
: 1ea |
| Wi-Fi 5 |
: Yes |
| Bluetooth 5.1 |
: Yes |
| Simplink ( HDMI CEC ) |
: Yes |
| HDMI Audio Return Channel |
: eARC ( HDMI 3 ) |
|
| HDMI ( 2.1 ) |
: 4 ( 1 eARC ) |
| USB ( 3.0 + 2.0 ) |
: 2 ( USB 3.0 X 1, USB 2.0 X 1 ) |
| Wi-Fi 6 |
: Yes |
| Bluetooth 5.4 |
: Yes |
| Ethernet / LAN |
: Yes |
| Chromecast Built-In |
: Yes |
| SPDIF Digital Audio Optical |
: Yes |
| RF Input |
: ATSC 3.0, ATSC 1.0, NTSC |
|
| Smart TV Features |
| Operating System |
: WebOS 24 Smart TV |
| ThinQ |
: Yes |
| Multi View |
: Yes |
| LG Channels |
: Yes |
| Always Ready |
: Yes |
| Family Settings |
: Yes |
| Full Web Browser |
: Yes |
| USB Camera Compatible |
: Yes |
| Works With Apple Airplay2 |
: Yes |
| Intelligent Voice Recognition |
: Yes |
| Amazon Alexa |
: Built-in |
| Magic Remote Control |
: Built-In |
| The Security Update Is Supported Until |
: 31/12/2028 |
| Smartphone Remote App |
: Yes ( LG ThinQ ) |
|
| Operating System |
: Google TV |
| Netflix |
: Yes |
| YouTube |
: Yes |
| YouTube TV |
: Yes |
| Google Gemini |
: Yes |
| Google Chromecast Built-In |
: Yes |
| Ambient Mode Sensor |
: mm Wave |
| Screen Mirroring |
: Apple AirPlay 2 |
| Hands-Free Voice Control |
: Far-Field Mic Array |
| Push-To-Talk Voice Control |
: Backlit Voice Remote Control |
| Works With |
: Amazon Alexa, Google Assistant, Apple HomeKit |
|
| Other Features |
| Design |
: Slimeline Design |
| Gray Scale |
: Yes |
| Invert Colors |
: Yes |
| High Contrast |
: Yes |
|
| Design |
: Ultra Slim Design |
| Store Mode |
: Yes |
| Sleep Timer |
: Yes |
| Channel Skip |
: Yes |
| Program Guide |
: Yes |
| Closed Caption |
: Yes |
| Input Label Edit |
: Yes |
| Presence Sensor |
: Yes |
| Channel Scanning |
: Yes |
| JPEG / MP3 For USB |
: Yes |
| Auto Channel Search |
: Yes |
| TCL Halo Control System |
: Yes |
| Accessible Menu System ( CVAA ) |
: Yes |
| Live TV Pause From Antenna ( up To 30 Minutes ) |
: Yes |
| Parental Control ( V -Chip ) |
: USA |
| Control Buttons |
: One Button |
| Multilingual On-Screen-Display |
: English, Spanish, French |
| Warranty |
: 1 Year Limited Warranty |
|
| General Details |
| Power Supply |
: AC 100~240V 50-60Hz |
| Power Consumption Standby |
: Under 0.5 W |
| Weight Without Stand |
: 22.9 Kg |
| Weight With Stand |
: 23.5 Kg |
| Packaging Weight |
: 33.5 Kg |
| VESA Mounting |
: 300 mm X 200 mm |
|
| Power Supply ( Voltage, Hz ) |
: AC 100V-240V 50/60Hz |
| Annual Power Consumption |
: 450 kWh/Y |
| Power Consumption Standby |
: < 0.5 W |
| Weight Without Stand |
: 28.39 Kg |
| Weight With Stand |
: 30.39 Kg |
| Package Weight |
: 40.20 Kg |
| VESA Walll Mount Pattern |
: 400 mm X 400 mm |
|
| Supplied Accessories |
| Remote Control |
: Magic Remote MR24 With NFC |
| Power Cable |
: Yes ( Attached ) |
| AA X 2 Batteries |
: Yes |
|
| Remote Control |
: Backlit Voice Remote Control |
| Power Cord |
: Detachable |
| 2 X AAA Batteries |
: Yes |
| Warranty Info English |
: Yes |
| Quick Start Guide English |
: Yes |
|
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Compare LG OLED77B42LA with:
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Compare TCL 75QM9K with:
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Key Differences
Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs come with smart platforms that support popular streaming apps and voice control features. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing. Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. There is a difference in screen size (77 Inch (195.58 cm) vs 75 Inch (191 cm)), and a larger screen generally provides a more immersive viewing experience. Audio output differs between the two (20 W vs NA), which can influence overall sound clarity and loudness. LG OLED77B42LA and TCL 75QM9K are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users. LG OLED77B42LA and TCL 75QM9K offer different motion rates (120 Hz vs 144 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Verdict: Both models offer good value, and the better option depends on your specific requirements and viewing preferences.
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