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LG OLED B9 vs Sony BRAVIA 8 II

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

Better figure, where one is clearly better

LGOLED B9SonyBRAVIA 8 II
Overview
Released2019June 2025
Display
PanelOLEDQD-OLED
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate120 Hz120 Hz
HDR formatsDolby Vision, HDR10, HLGDolby Vision, HDR10, HLG
HDR extrasAdvanced HDR by Technicolor also supportedIMAX Enhanced
Screen finish–Low-reflection film
Peak brightness–About 1,800 cd/m² calibrated and up to 2,200 cd/m² in Vivid mode, HDR (FlatpanelsHD, 65″)
Colour range–XR Triluminos Max
Picture processingAI Picture, AI Brightness, 4K Upscaler and dynamic tone mappingXR Contrast Booster 25, XR 4K Upscaling, AI scene recognition, ambient light sensor
Picture modes–Vivid, Standard, Cinema, Professional, Calm, Photo, IMAX Enhanced, Dolby Vision (Vivid, Bright, Dark, Game), FPS Game, RTS Game; Studio Calibrated modes for Netflix, Prime Video and Sony Pictures Core
Motion handlingNative 120Hz (RTINGS); exact LG France 55-inch sheet confirms 4K HFR at 120fps over HDMI and USB. Original UK and Austrian sheets retain the launch wording that HDMI HFR would be enabled by update.XR OLED Motion
Sizes
Sizes55, 65, 77″55, 65″
Largest size77″65″
Gaming
HDMI ports4 (all HDMI 2.1 at 4K 120 Hz+)4 (2 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateHDMI VRR, G-Sync CompatibleHDMI VRR
Auto low latency modeYesYes
HDMI detailFour HDMI 2.1 inputs, one rear and three side; eARC on HDMI 2. RTINGS' original test lacked an HDMI 2.1 source and did not measure 4K 120Hz input.HDMI 2.1 features: 4K 120 fps, eARC, VRR, ALLM, SBTM (Source-Based Tone Mapping); HDCP 2.3 on all four inputs
Input lag–17 ms at 60 Hz, about half that at 120 Hz (FlatpanelsHD)
Game featuresHDMI VRR and ALLM. RTINGS records G-Sync Compatible firmware support in its June 2020 update; this is a later feature, rather than a launch-day capability. No FreeSync support is claimed.Game Menu; Auto HDR Tone Mapping and Auto Genre Picture Mode with a PS5; Dolby Vision Game mode
Smart TV and sound
Smart TV platformwebOSGoogle TV
Processorα7 Gen2 Intelligent ProcessorXR Processor
Speakers40 W, 2.2 channels50 W, 2.2 channels
Dolby AtmosYesYes
DTS:X–Yes
eARCYesYes
Wi-FiWi-Fi 5 (802.11ac)Wi-Fi 6E
Bluetooth5.05.3
Speaker detail–Acoustic Surface Audio+ with 2 actuators and 2 subwoofers, 15 W + 15 W + 10 W + 10 W
Audio featuresDolby Atmos, AI Sound, Clear Voice III and DTS decoding; RTINGS confirms eARC Dolby Atmos and DTS:X passthrough to compatible receivers.Acoustic Center Sync, Voice Zoom 3, 3D Surround Upscaling, S-Force Front Surround, automatic room and position sound calibration, S-Master digital amplifier
Voice assistants–Google Assistant built in with hands-free voice search; works with Alexa and Apple HomeKit
CastingApple AirPlay 2; regional maker sheets include this later featureGoogle Cast, Apple AirPlay
TV tuners–DVB-T/T2, DVB-C and DVB-S/S2; 2 terrestrial/cable and 2 satellite digital tuners; CI+
Software updatesFirst sale retained at year precision because no exact maker on-sale month was established by the bounded source search.–
USBThree USB ports, two rear and one side2 × USB; USB hard disk recording
EthernetEthernet LAN port1 × Ethernet
Optical audio outOptical digital audio output; headphone output also fitted1 × optical digital audio out (shared with the S-Center speaker input)
Design and power
SizeWithout stand (W × H × D): 55″ 1228 × 706 × 46.9 mm; 65″ 1449 × 830 × 46.9 mm; 77″ 1723 × 992 × 55.3 mm. Exact PLA regional LG sheets fill missing UK size measurements.Without stand, 55″ 1224 × 707 × 34 mm; 65″ 1443 × 830 × 34 mm
Stand55″ and 65″ stand width 559 mm; 77″ with stand 1723 × 1043 × 270 mmAluminum Edge Stand with two heights (standard and soundbar)
VESA pattern55″ and 65″: 300 × 200 mm; 77″: 400 × 200 mm300 × 300 mm
Power use–55″ 334 W, 65″ 418 W rated; 0.5 W standby
Colours–Black
In the boxMagic Remote and power cable; UK 65-inch sheet lists two AA batteries–

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