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LG OLED B4 vs Panasonic MZ2000

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

LGOLED B4PanasonicMZ2000
Overview
ReleasedMarch 2024August 2023
Display
PanelOLEDOLED
Panel detailSelf-lit 4K OLED with pixel dimmingPanasonic calls the 55- and 65-inch panels Master OLED Ultimate with Micro Lens Array and a multi-layer heat sink. Its 77-inch UK page calls that larger, different panel Master OLED Pro Cinema Size without Micro Lens Array.
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate120 Hz120 Hz
HDR formatsDolby Vision, HDR10, HLGDolby Vision, HDR10, HDR10+, HLG
HDR extras–Dolby Vision IQ, HDR10+ Adaptive and HLG Photo; Filmmaker Mode adjusts white balance for ambient light.
Peak brightness–AVForums measured 1,426 cd/m² on a 10% HDR window in Filmmaker Mode on the 55-inch MLA set; this is not a 77-inch figure.
Colour range–AVForums measured 98% DCI-P3 coverage on its 55-inch MLA sample; TechRadar measured 99.45% on a separate 55-inch sample.
Picture processingAI Picture Pro, α8 AI Super Upscaling 4K, AI Brightness Control, Dynamic Tone Mapping Pro and Filmmaker ModeHCX Pro AI Processor, Streaming 4K Remaster, Filmmaker Mode and Auto AI; Micro Lens Array applies only to the 55- and 65-inch versions.
Picture modesPersonalised Picture Wizard, Vivid, Standard, APS, Cinema, Sports, Game, Filmmaker and ISF Expert bright/dark room modesFilmmaker Mode, True Game, True Cinema and Panasonic Professional modes, including calibration controls.
Motion handlingNative 120Hz panel; OLED Motion and HDMI 4K 120 fps inputUp to 120 Hz native refresh and 4K 120 Hz input on HDMI1 and HDMI2. AVForums found clean 24 fps cadence with interpolation off on the reviewed 55-inch model.
Sizes
Sizes48, 55, 65, 77″55, 65, 77″
Largest size77″77″
Gaming
HDMI ports4 (all HDMI 2.1 at 4K 120 Hz+)4 (2 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateHDMI VRR, FreeSync Premium, G-Sync CompatibleHDMI VRR, FreeSync Premium, G-Sync Compatible
Auto low latency modeYesYes
HDMI detailFour inputs support 4K 120Hz, VRR, ALLM and QMS; eARC on HDMI 3Four HDMI inputs. Panasonic's UK manuals specify HDMI1 and HDMI2 for 4K 120 Hz, VRR, AMD FreeSync Premium and NVIDIA G-SYNC compatibility; HDMI2 carries eARC. HDMI3 and HDMI4 accept 4K at lower frame rates.
Input lag–AVForums measured 9.3 ms at 4K 60 Hz and 5.7 ms at 120 Hz on its 55-inch sample. TechRadar measured 15.2 ms at 4K 60 Hz on a separate 55-inch sample; test settings differed.
Variable refresh rangeLG specifies 40–120Hz–
Game featuresGame Optimiser and Dashboard, HGiG, AMD FreeSync Premium, NVIDIA G-SYNC Compatible and Dolby Vision gaming at 4K 120HzTrue Game picture mode, Game Control Board, VRR and ALLM. Dolby Vision gaming is limited to 4K 60 Hz according to the independent AVForums test.
Smart TV and sound
Smart TV platformwebOSmy Home Screen
Processorα8 AI Processor 4KHCX Pro AI Processor
Speakers20 W, 2.0 channels5.1.2 channels
Dolby AtmosYesYes
eARCYesYes
Wi-FiWi-Fi 5Built-in dual-band IEEE 802.11a/b/g/n/ac
Bluetooth5.1Bluetooth 5.0
Speaker detailDown-firing 2.0-channel speakersPanasonic UK manuals specify 150 W for 55 inches (70 W front array + 15 W × 2 side + 15 W × 2 upward + 20 W woofer), 160 W for 65 inches (80 W front array with the same remaining outputs), and 170 W for 77 inches (90 W front array with the same remaining outputs).
Audio featuresα8 AI Sound Pro with virtual 9.1.2 up-mixing, acoustic tuning, Clear Voice Pro, Bluetooth Surround Ready and WiSA up to 2.1 channelsTechnics-tuned 360° Soundscape Pro with Dolby Atmos, front array, side- and upward-firing speakers, room calibration and directional Sound Focus; 3.5 mm headphone/subwoofer socket.
Voice assistantsBuilt-in Amazon Alexa and LG intelligent voice recognition; supported languages vary by countryVoice-control microphone in the supplied Bluetooth remote; service availability depends on region and firmware.
CastingApple AirPlay 2, ThinQ remote app and Multi ViewPanasonic my Home Screen 8.0 includes streaming apps and local media features; app availability changes over time.
TV tuners–UK DVB-S/S2 satellite, DVB-T/T2 terrestrial, DVB-C cable and PAL I analogue tuners; two satellite inputs.
Software updateswebOS 24; LG states four upgrades over five years with regional scheduling differences and security support through 31 December 2028. LG Australia's March 2024 launch notice confirms the range available now and lists 55/65-inch B4 March availability; release records that first confirmed series month, not a universal UK size-specific date.–
USBTwo USB 2.0 portsOne USB 3.0 and two USB 2.0 ports.
EthernetEthernet LAN portRJ45 10/100 Ethernet.
Optical audio outOne optical digital audio outputFibre-optic PCM and Dolby Audio output.
Design and power
SizeWithout stand (W × H × D): 48″ 1070 × 620 × 45.9 mm; 55″ 1228 × 708 × 45.9 mm; 65″ 1449 × 832 × 45.9 mm; 77″ 1719 × 989 × 50.9 mmWith recommended pedestal, Panasonic UK lists 55-inch 1227 × 786 × 350 mm and 25.5 kg; 65-inch 1448 × 910 × 350 mm and 30.5 kg; 77-inch 1723 × 1073 × 350 mm and 50 kg.
StandWith stand (W × H × D; weight): 48″ 1070 × 684 × 235 mm, 11.7 kg; 55″ 1228 × 772 × 235 mm, 14.5 kg; 65″ 1449 × 896 × 235 mm, 17.3 kg; 77″ 1719 × 1057 × 319 mm, 23.5 kg. Stand footprint: 48″ 933 × 235 mm; 55/65″ 1057 × 235 mm; 77″ 1403 × 319 mm.Supplied central swivel pedestal.
VESA pattern300 × 200 mm across these UK sizes–
Power useUnder 0.5 W standby; 100–240 V AC, 50–60Hz supplyPanasonic's 65-inch UK product sheet lists 112 W SDR, 171 W HDR and 0.5 W standby; the other sizes are not represented by those figures.
Energy class–The 65-inch UK product information sheet gives G for SDR and HDR under the current energy-label system; no common class is claimed for all sizes.
In the boxMagic Remote MR24, two AA batteries and attached power cablePanasonic's UK instructions list the remote control, batteries, pedestal and mains lead. TechRadar dates UK release to August 2023; the maker's January announcement does not establish the first on-sale day.

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