The 55QNED816QA is a 55 inch 4K TV from LG, launched in the year 2022. It features a True 10-bit VA panel. It can achieve a maximum resolution of 3840 x 2160 with a refresh rate of 120 Hz and pixel density of 80 ppi.
Picture Quality
After screen size and resolution, the very next spec of a display that will impact your viewing experience is its Color Gamut.
This TV doesn't come with a color gamut specification, so we have to make an assumption based on its panel type.
Now, since the TV features a 55 inch screen, it won't come with a cheap panel, so here we can assume its equivalent sRGB coverage to be 90-100% or above. Undoubtedly The color accuracy on this TV will be Lifelike! Meaning it is capable of producing accurate colors by default.
What is Color gamut ?
Color gamut spec of a TV is a measure of the range of colors that the display can show.
A panel with poor color accuracy will produce undersaturated colors that will not be pretty to look at.
Different manufacturers use different units to define color gamut. Such as — sRGB (most popular), NTSC, DCI P3 Adobe RGB and rec.2020.
But don't worry, below is a chart that will help you choosing a TV with good color accuracy.
Next in the list of important specifications is Static Contrast.
Understanding Static Contrast
There are two types of contrast specifications for a TV. Static and Dynamic. We are interested in static contrast ratio as dynamic doesn't matter much.
Static contrast specification defines the intensity of black levels. That is, a TV with static contrast ratio less than 1000:1 may produce black images something like this:

Moreover, such TVs are likely to suffer from backlight bleeds that will affect your experience — as shown below.

Think of static contrast as another dimension to details — just like resolution. To put it into perspective, a TV with low contrast ratio will produce less shades of colors, so lesser detail overall.
If given a choice, I will prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
This TV features a static contrast ratio of 8000:1., good enough to achieve deep blacks. For the record, it also comes with local dimming technology which is a plus.
HDR is also supported on this TV in form of HLG (Hybrid Log Gamma), HDR10 and HDR10 Pro.
As for brightness, it is can achieve a maximum brightness of 250 nits. The backlight used on the panel is Edge LED (Local Dimming).
Gaming Performance
If you are planning to use your TV just for content consumption, you can safely ignore these specifications. But if you are also planning to use the TV for playing games or use it as a PC monitor, make sure to take a TV with the lowest input lag and response time.
Unfortunately, we cannot find the input lag specification for this unit. Now, as this is not a cheap TV from LG, input lag on this TV could be 20ms or below.
What is Input lag ?
This lag is the latency at which key-presses/mouse movements changes the content of the screen. For casual Non-FPS games, input lag doesn't matter much.
Although for better experience, look for a TV that features an input lag and response time of less than 20ms.
Ergonomics and Dimensions
Coming to ergonomics — a VESA mount with interface size of 300 x 300 mm is provided for wall-mounting. The unit doesn't come with Swivel, Tilt or Pivot support.
The TV measures 55 inches vertically and 48.54 inches horizontally. Coming to thickness, it is 1.74 inches thick. In total it weighs around 17.9 kilograms including its stand. Without stand, it weighs 16.3 Kilograms. So plan your space accordingly.
Hardware and Audio
The TV is powered by Quad Core CPU. There is no information about the total available RAM on the TV's official specsheet.
The Operating System on this TV is webOS 22.
For display connectivity, LG has provided two HDMI 2.0 ports and two HDMI 2.1 ports on this TV.
To connect USB devices, it includes two USB 2.0 ports. Other connectivity ports include — 1x CI+ 1.4, 1x Antenna (RF) (female), 1x Satellite In (F-type female) and 1x Ethernet RJ45.
For wireless connectivity, the manufacturer has provided a 5Ghz Wi-Fi, 2.5 Ghz Wi-Fi, Wifi-Direct, Bluetooth 5.0 and DLNA.
Now, for audio, LG has provided 2 x 10W built-in speakers on the TV.
In terms of power consumption, it uses 82 Watts on average and 0.5 Watts on standby.
It supports a power outlet of 100 V - 120 V/50 Hz - 60 Hz.