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OLED48B4
Company ProductName Specs











48A90K
Company ProductName Specs











Advantages of the LG B4 (OLED)
  • Very good for bright room
  • Excellent for dark room
  • Excellent for gaming
  • Excellent for news, talk, & other TV
  • Excellent for use as monitor
  • Best in class viewing angle
  • Best in class reflections
Advantages of the Sony A90K (OLED)
  • Excellent for sports
  • Best in class for upscaling
  • Best in class motion processing

Key differences

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Sports

8.5
OLED48B4
48A90K
9.1
8.0/10
MOTION PROCESSING
10.0/10
120Hz
REFRESH RATE
120Hz
10.0/10
INPUT LAG SCORE
7.0/10
8.0/10
UPSCALING
10.0/10
8.0/10
SDR BRIGHTNESS SCORE
6.3/10
Yes
HLG SUPPORT
Yes
The Sony A90K (OLED) is excellent for sports, while the LG B4 (OLED) is very good.

Bright Room

8.3
OLED48B4
48A90K
6.7
9.5/10
VIEWING ANGLE
8.8/10
8.0/10
SDR BRIGHTNESS SCORE
6.3/10
8.0/10
HDR BRIGHTNESS SCORE
6.2/10
10.0/10
REFLECTIONS SCORE
8.9/10
The LG B4 (OLED) is very good for bright room, while the Sony A90K (OLED) is only fair.
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Key similarities

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Picture Quality

9.0
OLED48B4
48A90K
8.5
10/10
CONTRAST
10.00/10
8.1/10
COLOR VOLUME SCORE
8.0/10
WOLED
PANEL TYPE
WOLED
WBC
PANEL SUB-TYPE
WBE
Although they have very similar scores, PerfectRec considers LG B4 (OLED) to have excellent picture quality, while the Sony A90K (OLED) has very good picture quality.

Movies & TV

9.2
OLED48B4
48A90K
9.1
10/10
CONTRAST
10.00/10
10.0/10
BLACK UNIFORMITY
10.0/10
8.0/10
UPSCALING
10.0/10
Yes
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
No
Yes
DOLBY VISION SUPPORT
Yes
The LG B4 (OLED) and Sony A90K (OLED) are both excellent for movies & TV.

Gaming

9.0
OLED48B4
48A90K
8.8
10.0/10
RESPONSE TIME SCORE
9.4/10
10.0/10
INPUT LAG SCORE
7.0/10
8.0/10
MOTION PROCESSING
10.0/10
100.0/100
GAMING LOCAL DIMMING
100.0/100
8.0/10
GAME HDR BRIGHTNESS SCORE
6.2/10
Although they have very similar scores, PerfectRec considers LG B4 (OLED) to be excellent for gaming, while the Sony A90K (OLED) is very good.

Cartoons & Animation

8.8
OLED48B4
48A90K
8.4
8.3/10
COLOR GAMUT SCORE
8.3/10
8.1/10
COLOR VOLUME SCORE
8.0/10
8.0/10
SDR BRIGHTNESS SCORE
6.3/10
7.9/10
COLORS OUT OF THE BOX SCORE
7.7/10
10.0/10
GRAY UNIFORMITY
9.6/10
The LG B4 (OLED) and Sony A90K (OLED) are both very good for cartoons & animation.

News, Talk, & Other TV

9.0
OLED48B4
48A90K
8.7
8.0/10
SDR BRIGHTNESS SCORE
6.3/10
8.0/10
UPSCALING
10.0/10
Although they have very similar scores, PerfectRec considers LG B4 (OLED) to be excellent for news, talk, & other TV, while the Sony A90K (OLED) is very good.

Cost

$1,300
OLED48B4
48A90K
$1,398
Product imageProduct image

$500

$1,000

$1,500

$2,000

$2,500

The LG B4 (OLED) has a price of $1,300 and the Sony A90K (OLED) costs $1,398.

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How the LG B4 (OLED) and the Sony A90K (OLED) compare to other TVs

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Spec Comparison

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LG B4 (OLED)Sony A90K (OLED)
LG B4 (OLED)Sony A90K (OLED)

GENERAL

Price
$1,300
$1,398
Brand
LGSony
Release Date
March 1, 2024June 2, 2022
Full name
OLED48B448A90K
Screen Size
48"48"
Screen Resolution
4K4K

TV FEATURES

Operating System
WebOSAndroid TV
Sound Quality Score
8/107/10
NextGen Ready
NoYes
HDMI Ports
44
Coax Ports
11

DISPLAY QUALITY SCORES

Picture Quality Score
9/108.6/10
Bright Room Score
8.3/106.8/10
Gaming Score
9/108.8/10
Movies & TV Score
9.2/109.1/10
Sports Score
8.5/109.2/10

PHYSICAL

Dimensions w/o Stand (H x W x D)
24.3" x 42.2" x 1.8"24.6" x 42.1" x 2.4"
Dimensions with Stand (H x W)
26.6" x 42.2"24.9" x 42.1"
Weight without Stand
32.8 lbs29.6 lbs
VESA Mount
300 x 200300 x 300

DISPLAY

Color Depth
10 bit10 bit
Black Frame Insertion
YesYes
Auto Low Latency Mode
YesYes
Contrast
10/1010/10
Local Dimming
10/1010/10

SOUND

Speaker Setup
2.02.1
Speaker Power
20 W25 W
Dolby Atmos
YesYes
DTS:X
YesUp to DTS Digital Surround, Bypass only

Get a great deal on the LG B4 (OLED) or the Sony A90K (OLED)

About LG

LG, a prominent TV brand from Korea, has played a significant role in popularizing OLED TVs. OLED technology is hailed as the future of TV technology. Their TVs employ WebOS, a proprietary smart TV software that not only offers seamless functionality but also includes gaming-specific features, earning praise from players worldwide. Often regarded as the gateway to unparalleled viewing experiences, LG's mid-range OLEDs come highly recommended, making them a worthwhile investment for those willing to stretch their budget for superior quality.

About Sony

Sony stands as a highly experienced and widely trusted TV manufacturer, earning a reputation that surpasses all others. A Japanese company, Sony has been making TVs for far longs than it has been making Playstation game consoles. Sony's high-end TVs are often regarded as the ultimate choice for videophiles, representing the epitome of quality, albeit at a premium price point. Renowned for their advanced and precise motion handling, as well as their cutting-edge local dimming algorithms, Sony consistently delivers unparalleled performance in these areas. They include Google TV software with all their TV sets, which grants access to the largest selection of apps available and they also include Bravia Core which is a movie streaming platform specifically for Sony TVs that offers higher picture quality by using more bandwidth.

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Why trust us

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This information was produced and vetted by the PerfectRec TVs team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest TV information and makes it digestible for you.

By the numbers

385
TVs evaluated
33,110
TVs stats compiled
21
Proprietary TVs ratings developed
65,430
Recommendations made
9,815
Consumer hours saved

About the TV team

Joe Golden, Ph.D

CEO and TVs Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.

Jason Lew

Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.

Chandradeep Chowdhury

Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.

Jaime Roldán

TVs Expert
Jaime is a Colombia-based TV expert. He is an electronics engineer with 8 years of experience in the telecom sector and has been making TV recommendations for 12 years.

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