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Updated April 10, 2024·
If you're looking to save money and need a basic TV, the Amazon 4-Series might be suitable for you, but keep in mind it has limitations in picture quality across various content including movies, sports, and gaming, and it doesn't perform well in dark or bright rooms. On the other hand, the LG NANO90, while more expensive, offers better gaming performance and overall picture quality, especially in well-lit rooms due to its higher brightness and reflection handling. It also has a wider viewing angle, making it a better choice if you often watch TV with a group. However, its contrast is not as good, which can affect the depth of dark scenes. Both TVs have their shortcomings in picture quality, but the LG NANO90 is a more versatile option. 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 NANO90 (LCD).
Advantages of the LG NANO90 (LCD)
- Very good for gaming
- Good for use as monitor
- Good for upscaling
- Good motion processing
- Very good reflections
Key differences
Sports
5.7
6.8
2.5/10
MOTION PROCESSING
7.5/10
60Hz
REFRESH RATE
120Hz
8.0/10
INPUT LAG SCORE
8.7/10
6.6/10
UPSCALING
7.5/10
6.8/10
SDR BRIGHTNESS SCORE
7.8/10
Yes
HLG SUPPORT
Yes
The LG NANO90 (LCD) is only fair for sports, while the Amazon 4-Series (LCD) is poor.
Gaming
5.5
8.0
5.6/10
RESPONSE TIME SCORE
7.6/10
8.0/10
INPUT LAG SCORE
8.7/10
2.5/10
MOTION PROCESSING
7.5/10
0.0/100
GAMING LOCAL DIMMING
50.0/100
5.7/10
GAME HDR BRIGHTNESS SCORE
7.6/10
The LG NANO90 (LCD) is very good for gaming, while the Amazon 4-Series (LCD) is poor.
News, Talk, & Other TV
5.7
6.4
6.8/10
SDR BRIGHTNESS SCORE
7.8/10
6.6/10
UPSCALING
7.5/10
The LG NANO90 (LCD) is only fair for news, talk, & other TV, while the Amazon 4-Series (LCD) is poor.
Bright Room
6.1
6.9
5.2/10
VIEWING ANGLE
6.3/10
6.8/10
SDR BRIGHTNESS SCORE
7.8/10
5.6/10
HDR BRIGHTNESS SCORE
7.2/10
6.3/10
REFLECTIONS SCORE
8.0/10
The LG NANO90 (LCD) and Amazon 4-Series (LCD) are both only fair for bright room, though the LG NANO90 (LCD) is somewhat better.
Cost
$330
$1,100
$0
$500
$1,000
$1,500
$2,000
The Amazon 4-Series (LCD) has a price of $330 and the LG NANO90 (LCD) costs $1,100.
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Key similarities
Picture Quality
5.7
6.1
7.13/10
CONTRAST
5.28/10
6.2/10
COLOR VOLUME SCORE
6.6/10
LED
PANEL TYPE
LED FALD
VA
PANEL SUB-TYPE
IPS
Although they have very similar scores, PerfectRec considers LG NANO90 (LCD) to have only fair picture quality, while the Amazon 4-Series (LCD) has poor picture quality.
Movies & TV
5.2
5.6
7.13/10
CONTRAST
5.28/10
5.9/10
BLACK UNIFORMITY
5.3/10
6.6/10
UPSCALING
7.5/10
Yes
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
No
No
DOLBY VISION SUPPORT
Yes
The LG NANO90 (LCD) and Amazon 4-Series (LCD) are both poor for movies & TV.
Cartoons & Animation
5.4
5.6
5.9/10
COLOR GAMUT SCORE
6.5/10
6.2/10
COLOR VOLUME SCORE
6.6/10
6.8/10
SDR BRIGHTNESS SCORE
7.8/10
3.4/10
COLORS OUT OF THE BOX SCORE
4.3/10
5.9/10
GRAY UNIFORMITY
5.9/10
The LG NANO90 (LCD) and Amazon 4-Series (LCD) are both poor for cartoons & animation.
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How the Amazon 4-Series (LCD) and the LG NANO90 (LCD) compare to other TVs
Spec Comparison
 |  | |
| Amazon 4-Series (LCD) | LG NANO90 (LCD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$330 | $1,100 | ||
Brand | |||
Brand | Amazon | LG | |
Release Date | |||
Release Date | August 3, 2021 | March 1, 2021 | |
Full name | |||
Full name | 4K55N400A | 55NANO90 | |
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 | 6.4/10 | |
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 | 6.1/10 | |
Bright Room Score | |||
Bright Room Score | 6.1/10 | 7/10 | |
Gaming Score | |||
Gaming Score | 5.6/10 | 8/10 | |
Movies & TV Score | |||
Movies & TV Score | 5.3/10 | 5.6/10 | |
Sports Score | |||
Sports Score | 5.8/10 | 6.8/10 | |
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" | 28.2" x 48.5" x 1.8" | |
Dimensions with Stand (H x W) | |||
Dimensions with Stand (H x W) | 29.8" x 57.2" | 30.7" x 48.5" | |
Weight without Stand | |||
Weight without Stand | 42.5 lbs | 39.7 lbs | |
VESA Mount | |||
VESA Mount | 300 x 300 | 300 x 300 | |
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 | 5.3/10 | |
Local Dimming | |||
Local Dimming | 2.5/10 | 5.2/10 | |
SOUND | |||
|---|---|---|---|
Speaker Setup | |||
Speaker Setup | 2.0 | 2.2 | |
Speaker Power | |||
Speaker Power | 16 W | 40 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 NANO90 (LCD)
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Dig into reviews and images
Techradar
John Archer | July 2021
"Here we have HDR pictures that look bright, but also manage to typically hit decently deep black levels.WebOS continues, though, to be one of the easiest to use. Connections are strong for a mid-range TV. Native 4K pictures look crisp and detailed."
Get a great deal on the Amazon 4-Series (LCD) or the LG NANO90 (LCD)
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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Why trust us
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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About the TV team
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Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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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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