•   Overview
•   Advantage of LG OLED55BX9LB
•   Advantage of Sony KD-55A1
•   Common Strengths and Weaknesses
•   Selected Features
•   Specifications

Here we are comparing LG OLED55BX9LB to Sony KD-55A1 to reveal their common strengths and weaknesses as well as the differences between them which will help you in making a correct decision before the purchase. Both models have the same 4K UHD (3840 x 2160) resolution and they both support HDR.

We have evaluated the TVs from available features and specifications. LG OLED55BX9LB gets higher overall score in our ranking system which is based on the display specifications, video, audio and other features, connectivity and format support.

This section shows the features and specifications which are the reason to choose LG OLED55BX9LB over Sony KD-55A1.

	LG OLED55BX9LB	vs	Sony KD-55A1
Lower Input Lag	5 ms	vs	30 ms
Dolby Vision IQ		vs
AMD Freesync™		vs
NVidia G-Sync		vs
4K HFR		vs
2K HFR		vs
VRR		vs
HGIG Compatibility		vs
Filmmaker Mode		vs
Auto Low Latency Mode		vs
Dolby Atmos		vs
WiSA Ready	Separate Dongle Purchase Required	vs
Newer Bluetooth Version	5.0	vs	4.1
Virtual Assistant	Google Assistant	vs
HDMI Version	2.1	vs	2.0
HDMI Audio Return Channel (ARC)	eARC (HDMI 2)	vs
HDCP Version	2.3	vs	2.2
3GPP		vs
AVI		vs
Flash Video		vs
MPEG-4		vs
TS		vs
VP9	4K@60p, 10bit	vs
AAC		vs
AC4		vs
aptX		vs
EAC3		vs
HE-AAC		vs
MP2		vs
JPS		vs

This section shows the features and specifications which are the reason to choose Sony KD-55A1 over LG OLED55BX9LB.

	LG OLED55BX9LB	vs	Sony KD-55A1
IMAX Enhanced		vs
Higher Speaker Power Rating	40W (WF:20W, 10W per Channel)	vs	10 W + 10 W + 10 W + 10 W + 10 W
DTS Digital Surround		vs
Chromecast		vs
Google Home		vs
USB 3.0 Ports		vs	1
ASF		vs
VP8		vs
WebM		vs
WMV		vs
Xvid		vs
M4A		vs
MIDI		vs
WAV		vs
GIF		vs
PNG		vs
More Tuners (Terrestrial/Cable)	1	vs	2
More Tuners (SAT)		vs
Higher Energy Efficiency Class	G	vs	B

OLED displays

LG OLED55BX9LB and Sony KD-55A1 have organic light-emitting diode (OLED) displays. This is a self-emissive display which can completely turn off individual pixels leading to the ideal black levels and better contrast during HDR compared to any LCD displays. This makes them to be the best choice for dark rooms. OLED enables a simpler internal structure than conventional displays. With just a few layers, OLED TVs are very lightweight and thin. OLED displays also have better viewing angles. However, they are not able to achieve such high brightness as modern LCD displays which makes them less suitable in bright rooms.

HDR10

LG OLED55BX9LB and Sony KD-55A1 support HDR10 which was announced on August 27, 2015, by the Consumer Technology Association and uses the wide-gamut Rec. 2020 color space. It is not backward compatible with SDR. It sends static metadata via video stream to the TV which calibrates its screen brightness and color according to that. HDR10 is technically limited to a maximum of 10,000 nits of brightness and uses 10-bit color which corresponds to 1024 shades of the primary RGB colors.

Dolby Vision

LG OLED55BX9LB and Sony KD-55A1 also support Dolby Vision which is an update to HDR10 by adding dynamic metadata that can be used to more accurately adjust brightness levels up to 10,000 nits on a scene-by-scene or frame-by-frame basis and supports up to 12-bit color depth (4096 shades of RGB) and 8K resolution.

And in the end we display all the specifications which are present for both models.

Note: The following table shows only those details which are applicable for both models and excludes the ones that are applicable for only one model. If you want to see a full list of specs for each model please visit their individual pages here - LG OLED55BX9LB and here - Sony KD-55A1.

BASICS	LG OLED55BX9LB	Sony KD-55A1
Brand	LG	Sony
Series	BX	A1
Model	OLED55BX9LB	KD-55A1
Size	55"	55"
Country	Germany	UK
Release Year	2020	2017
Smart TV

DISPLAY	LG OLED55BX9LB	Sony KD-55A1
Display Type	OLED	OLED
Actual Size (Diagonal)	54.6"	54.6" (138.8 cm)
Resolution	4K UHD (3840 x 2160)	4K UHD (3840 x 2160)
Refresh Rate	100 Hz/120 Hz	100 Hz/120 Hz
Screen Design	Flat	Flat
Contrast	Infinite Contrast	Infinite Contrast
Color	Perfect Color	TRILUMINOS™ Display
Viewing Angle	Perfect Viewing Angle	Perfect Viewing Angle
Panel Bit Depth	10 bits	10 bits
Color Depth	1.07 Billion	1.07 Billion
Contrast Ratio	∞	∞
Input Lag	5 ms	30 ms

VIDEO	LG OLED55BX9LB	Sony KD-55A1
3D Capability
HDR10
HDR10+
Dolby Vision
Dolby Vision IQ
HLG
Advanced HDR by Technicolor®
IMAX Enhanced
AMD Freesync™
NVidia G-Sync
4K HFR
2K HFR
VRR
HGIG Compatibility
Picture Processor	α7 Gen3 Processor 4K	X1™ Extreme
Black Frame Insertion	OLED Motion Pro
Filmmaker Mode
Auto Low Latency Mode

AUDIO	LG OLED55BX9LB	Sony KD-55A1
Speaker Power Rating	40W (WF:20W, 10W per Channel)	10 W + 10 W + 10 W + 10 W + 10 W
Dolby Atmos
DTS Digital Surround
WiSA Ready	Separate Dongle Purchase Required

CONNECTIVITY	LG OLED55BX9LB	Sony KD-55A1
Ethernet Input
Wi-Fi
Wi-Fi Protocol	802.11a/b/g/n/ac	802.11a/b/g/n/ac
Bluetooth
Bluetooth Version	5.0	4.1
Chromecast
Google Home
Virtual Assistant	Google Assistant
Works with Alexa	Alexa Built-In
HDMI Inputs	4	4
HDMI Version	2.1	2.0
HDMI Audio Return Channel (ARC)	eARC (HDMI 2)
HDCP Version	2.3	2.2
HDMI-CEC	SIMPLINK	BRAVIA Sync
USB Inputs	3	3
USB 3.0 Ports		1
RF (Terrestrial / Cable ) Inputs	1	1
Component Inputs
Composite Inputs		1
RCA Audio Outputs
3.5mm headphone Audio Output
Optical Audio Output
RS-232C Remote		1
DLNA

OTHER	LG OLED55BX9LB	Sony KD-55A1
CPU Cores	4	4
Operating System	webOS	Android
Internet Browser	Full Web Browser	Vewd
Application Store	LG Content Store	Google Play Store
Teletext	Flof

VIDEO FORMATS	LG OLED55BX9LB	Sony KD-55A1
3GPP
AV1	4K@60p, 10bit
AVI
ASF
DivX
Flash Video
H.263
H.264
H.265
MKV
M2TS
MP4
MPEG-4
QuickTime
RealVideo
TS
VC-1
VP7
VP8
VP9	4K@60p, 10bit
VOB
VRO
WebM
WMV
Xvid

AUDIO FORMATS	LG OLED55BX9LB	Sony KD-55A1
AAC
AC4
AIFF
ALAC
APE
aptX
eAAC+
EAC3
FLAC
HE-AAC
LPCM
M4A
MIDI
MP2
MP3
OGG
RealAudio
WMA
WAV

IMAGE FORMATS	LG OLED55BX9LB	Sony KD-55A1
BMP
GIF
JPEG
JPS
MPO
PNG

TUNER	LG OLED55BX9LB	Sony KD-55A1
Digital Tuner	1	2
SAT Tuner
Analog Tuner	PAL/SECAM, B/G, D/K, I, SECAM L	B/G,D/K,I
Digital Terrestrial TV System	DVB-T/T2	DVB-T/T2
Digital Cable TV System	DVB-C	DVB-C
Digital SAT TV System	DVB-S/S2	DVB-S/S2
Color system	PAL / SECAM / NTSC	PAL / SECAM / NTSC3.58 / NTSC4.43
CI+	CI+ 1.4

GENERAL	LG OLED55BX9LB	Sony KD-55A1
Energy Efficiency	G	B
Power Supply	AC 100-240 V, 50/60 Hz	AC 220 V - 240 V, 50 Hz
Power Consumption (Typical)	104 W (185 W during HDR)	378 W
Power Consumption (In Standby)	0.5 W	0.5 W
Dimension Without Stand (W x H x D)	1228 x 706 x 46.9 mm 48.3" x 27.8" x 1.8"	1228 mm x 711 mm x 86 mm 48-3/8" x 28" x 3-1/2"
Dimension With Stand (W x H x D)	1228 x 744 x 246 mm 48.3" x 29.3" x 9.7"	1228 mm x 710 mm x 339 mm 48-3/8" x 28" x 13-3/8"
Stand Size	559 x 246 mm / 22"	Width: 468 mm (18-1/2")
Dimension of Package (W x H x D)	59.3" x 32.9" x 8.1"	1364 mm x 872 mm x 196 mm 53-3/4" x 34-3/8" x 7-3/4"
One Connect Box
VESA Wall Mount
VESA Hole Pitch (W x H)	300 mm x 200 mm	400 mm x 200 mm 15-3/4" x 7-7/8"
Weight Without Stand	41.7 lbs	25.0 kg (55.1 lbs)
Weight With Stand	43.9 lbs	28.8 kg (63.5 lbs)
Weight of Package (Gross)	56.4 lbs	39 kg (86 lbs)