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Updated April 10, 2024·
If you are on a budget and looking for an affordable TV, the Amazon 4-Series may suit you, but it performs poorly in most areas, including picture quality and gaming, and is not ideal for bright rooms. The LG B2, on the other hand, is much more expensive but offers excellent performance with superior picture quality and viewing experience for movies, series, and sports, as well as good performance in bright rooms. It's also better for gaming with its higher refresh rate and features like OLED technology, which provides better contrast. If you prioritize picture quality, gaming, and are willing to invest for a better viewing experience, the LG B2 is a better choice. If saving money is paramount and you have modest expectations for your TV's performance, the Amazon 4-Series could be acceptable. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the Amazon 4-Series (LCD)
- The Amazon 4-Series (LCD) has no clear advantages over the LG B2 (OLED).
Advantages of the LG B2 (OLED)
- Good for bright room
- Excellent for dark room
- Very good for gaming
- Excellent for movies & TV
- Very good for sports
- Very good for news, talk, & other TV
- Very good for cartoons & animation
- Very good for use as monitor
- Very good for upscaling
- Very good motion processing
- Best in class viewing angle
- Excellent reflections
Key differences
Picture Quality
5.7
8.7
7.13/10
CONTRAST
10.00/10
6.2/10
COLOR VOLUME SCORE
7.1/10
LED
PANEL TYPE
WOLED
VA
PANEL SUB-TYPE
WBC
The LG B2 (OLED) has very good picture quality, while the Amazon 4-Series (LCD) has poor picture quality.
Movies & TV
5.2
9.1
7.13/10
CONTRAST
10.00/10
5.9/10
BLACK UNIFORMITY
10.0/10
6.6/10
UPSCALING
8.0/10
Yes
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
No
No
DOLBY VISION SUPPORT
Yes
The LG B2 (OLED) is excellent for movies & TV, while the Amazon 4-Series (LCD) is poor.
Sports
5.7
8.4
2.5/10
MOTION PROCESSING
8.0/10
60Hz
REFRESH RATE
120Hz
8.0/10
INPUT LAG SCORE
8.7/10
6.6/10
UPSCALING
8.0/10
6.8/10
SDR BRIGHTNESS SCORE
7.6/10
Yes
HLG SUPPORT
Yes
The LG B2 (OLED) is very good for sports, while the Amazon 4-Series (LCD) is poor.
Gaming
5.5
8.9
5.6/10
RESPONSE TIME SCORE
10.0/10
8.0/10
INPUT LAG SCORE
8.7/10
2.5/10
MOTION PROCESSING
8.0/10
0.0/100
GAMING LOCAL DIMMING
100.0/100
5.7/10
GAME HDR BRIGHTNESS SCORE
7.3/10
The LG B2 (OLED) is very good for gaming, while the Amazon 4-Series (LCD) is poor.
Cartoons & Animation
5.4
8.6
5.9/10
COLOR GAMUT SCORE
8.1/10
6.2/10
COLOR VOLUME SCORE
7.1/10
6.8/10
SDR BRIGHTNESS SCORE
7.6/10
3.4/10
COLORS OUT OF THE BOX SCORE
8.5/10
5.9/10
GRAY UNIFORMITY
9.2/10
The LG B2 (OLED) is very good for cartoons & animation, while the Amazon 4-Series (LCD) is poor.
News, Talk, & Other TV
5.7
8.9
6.8/10
SDR BRIGHTNESS SCORE
7.6/10
6.6/10
UPSCALING
8.0/10
The LG B2 (OLED) is very good for news, talk, & other TV, while the Amazon 4-Series (LCD) is poor.
Bright Room
6.1
7.5
5.2/10
VIEWING ANGLE
9.8/10
6.8/10
SDR BRIGHTNESS SCORE
7.6/10
5.6/10
HDR BRIGHTNESS SCORE
7.0/10
6.3/10
REFLECTIONS SCORE
9.3/10
The LG B2 (OLED) is good for bright room, while the Amazon 4-Series (LCD) is only fair.
Cost
$330
$1,120
$0
$500
$1,000
$1,500
$2,000
The Amazon 4-Series (LCD) has a price of $330 and the LG B2 (OLED) costs $1,120.
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How the Amazon 4-Series (LCD) and the LG B2 (OLED) compare to other TVs
Spec Comparison
 |  | |
| Amazon 4-Series (LCD) | LG B2 (OLED) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$330 | $1,120 | ||
Brand | |||
Brand | Amazon | LG | |
Release Date | |||
Release Date | August 3, 2021 | April 1, 2022 | |
Full name | |||
Full name | 4K55N400A | OLED55B2 | |
Screen Size | |||
Screen Size | 55" | 55" | |
Screen Resolution | |||
Screen Resolution | 4K | 4K | |
TV FEATURES | |||
|---|---|---|---|
Operating System | |||
Operating System | Fire OS | webOS | |
Sound Quality Score | |||
Sound Quality Score | 6.1/10 | 7.5/10 | |
NextGen Ready | |||
NextGen Ready | No | No | |
HDMI Ports | |||
HDMI Ports | 4 | 4 | |
Coax Ports | |||
Coax Ports | 1 | 1 | |
DISPLAY QUALITY SCORES | |||
|---|---|---|---|
Picture Quality Score | |||
Picture Quality Score | 5.8/10 | 8.7/10 | |
Bright Room Score | |||
Bright Room Score | 6.1/10 | 7.5/10 | |
Gaming Score | |||
Gaming Score | 5.6/10 | 9/10 | |
Movies & TV Score | |||
Movies & TV Score | 5.3/10 | 9.2/10 | |
Sports Score | |||
Sports Score | 5.8/10 | 8.4/10 | |
PHYSICAL | |||
|---|---|---|---|
Dimensions w/o Stand (H x W x D) | |||
Dimensions w/o Stand (H x W x D) | 28.3" x 57.2" x 3.5" | 27.9" x 48.3" x 1.8" | |
Dimensions with Stand (H x W) | |||
Dimensions with Stand (H x W) | 29.8" x 57.2" | 29.3" x 48.3" | |
Weight without Stand | |||
Weight without Stand | 42.5 lbs | 41.7 lbs | |
VESA Mount | |||
VESA Mount | 300 x 300 | 300 x 200 | |
DISPLAY | |||
|---|---|---|---|
Color Depth | |||
Color Depth | 10 bit | 10 bit | |
Black Frame Insertion | |||
Black Frame Insertion | No | Yes | |
Auto Low Latency Mode | |||
Auto Low Latency Mode | Yes | Yes | |
Contrast | |||
Contrast | 7.1/10 | 10/10 | |
Local Dimming | |||
Local Dimming | 2.5/10 | 10/10 | |
SOUND | |||
|---|---|---|---|
Speaker Setup | |||
Speaker Setup | 2.0 | 2.0 | |
Speaker Power | |||
Speaker Power | 16 W | 20 W | |
Dolby Atmos | |||
Dolby Atmos | Bypass only | Yes | |
DTS:X | |||
DTS:X | No | No | |
Shopping
Amazon 4-Series (LCD)
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Dig into reviews and images
Tech Advisor
Jim Martin | May 2023
"The attraction here is that the 4-Series uses Amazon’s Fire TV interface. Picture quality is good but unexceptional. At the discounted prices, which can seemingly be had regularly, they are better value."
LG B2 (OLED)
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Tom's guide
Nick Pino | March 2023
"The LG B2 OLED pairs lush, saturated colors and perfect contrast with a 120Hz screen, HDMI 2.1 ports and a great smart TV platform. The LG B2 OLED is an ideal alternative to the LG C2 OLED for folks who want a taste of OLED life without the sticker price that usually comes with it. The LG B2 OLED does a lot right in terms of performance, color saturation is wonderful and contrast is second-to-none. Not only did color saturation and off-axis viewing impress me, harder to quantify specs like motion processing and upscaling really blew me away as well."
Get a great deal on the Amazon 4-Series (LCD) or the LG B2 (OLED)
About Amazon
Amazon, the largest online retailer in North America, has forged partnerships with TCL and Hisense to produce white-label TVs incorporating their Fire OS software. These Amazon-branded TVs typically compete in the low-end and mid-range segments, offering compelling price points. Leveraging their strong reputation, Amazon has swiftly built brand trust in the TV market despite being relatively new to it. To enhance their popularity, these TVs integrate features from the Amazon ecosystem, including Alexa, providing users with a seamless and interconnected TV experience.
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.
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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.
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