The 50A6GX is a 50 inch 4K TV from Hisense, launched in the year 2021. It comes with a 10-bit VA panel. The maximum resolution it can display is 3840 x 2160 with a refresh rate of 60 Hz and a pixel density of 89 ppi.
Picture Quality
After screen size and resolution, the next important spec of a display that defines picture quality is Color Gamut.
Hisense did not provide a color gamut rating for this TV. But don't worry, we have other means to guess that. Considering the TV features a 50 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. The color accuracy on this TV should be Lifelike! It will produce color accurate images AS IT IS intended.
What is Color gamut ?
Color gamut specification of a TV is a measure of the range of colors that the display can produce.
A display with poor color reproduction will produce undersaturated/washed out colors that will spoil the immersion.
Different manufacturers use different measurement standards to specify color gamut. Such as — sRGB (most popular), NTSC, DCI P3 etc.
But don't worry, below is a chart that you can use to choose a TV with good color accuracy.
Now, after color gamut, the static contrast of a TV similarly impacts its picture quality.
The importance of static contrast ratio
A TV with low static contrast ratio will not produce deep enough blacks and may bleed backlight as shown below:

The static contrast ratio of above TV is 800:1. So make sure you get a TV with a static contrast of >= 1000:1. Ofcourse, More the better.
Other than black levels, a TV with high constrast ratio lets you to see more details. So, resolution and static contrast ratio go hand in hand.
If given a choice, always prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
However, we couldn't find a static contrast ratio specification for this TV. Again we have to take a guess based on the TV's other specifications. For a TV with VA panel, the static contrast ratio will surely atleast be 3000:1 or above — VA panels are known for that.
HDR is also supported on this TV in form of Dolby Vision and HDR10.
Coming to brightness, it is can achieve a maximum luminance of 250 nits. The panel of this TV is powered by Direct LED backlight.
Gaming Performance
If you aren't planning to game on this TV, you can ignore these specifications. But if you are also going to use the TV for playing games or use it as a PC monitor, you should get a TV that features the lowest input lag and response time.
Sadly, we cannot find the input lag specification for this unit. Now, as this is not a cheap TV from Hisense, input lag on this TV could be 20ms or below.
Understanding Input lag and response time
This lag is the latency at which your device inputs changes the content of the screen. Though, this won't matter much if you aren't into competitive/FPS games like call of duty.
But ideally, get a TV that has an input lag and response time of < 20ms.
Dimensions and Ergonomics
Vertically, the TV measures 50 inches and horizontally 43.98 inches. In terms of thickness, it is 2.91 inches thick.
It weighs 9.8 KGs, another 0.2 kgs if you include stand.
Coming to ergonomics — a VESA mount with interface size of 200 x 300 mm is provided for wall-mounting. The unit doesn't come with either Swivel, Tilt or Pivot support.
Hardware and Audio
The Operating System on this TV is XClass TV.
For display connectivity, there are three HDMI 2.0 (b; eARC; CEC) ports and one AV Composite In (Video + L/R) port on this TV.
For connecting USB devices, you will have one USB 2.0 port. Other connectivity ports include — 1x Cable/Antenna In (F-type) and 1x Ethernet RJ45.
Regarding wireless connections on this TV, the manufacturer has provided a 5Ghz Wi-Fi, 2.5 Ghz Wi-Fi, Wifi-Direct and Bluetooth.
For audio, it is packaged with 2 x 8W speakers.
In terms of power consumption, on average, this TV uses 72 watts and on standby, it uses 0.5 watts.
For powering this unit, you will need an 100 V - 120 V/50 Hz - 60 Hz outlet.