Launched in the year 2022, the 55GGU7900BA is a 55" 4K TV from Grundig. It features a 10-bit IPS panel.
The max. resolution it can achieve is 3840 x 2160 with a refresh rate of 60 Hz and a pixel density of 80 ppi.
Now, the very next spec of a display that impacts picture quality is its Color Gamut.
This TV doesn't provide a color gamut specification, so we have to make an assumption based on its panel type.
As this 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. The color quality on this TV should be Lifelike! It will produce color accurate images.
What is Color gamut ?
Color gamut spec of a TV indicates the range of colors that it can display.
What this means is, it determines the ability of a display to produce accurate colors. A TV with low gamut coverage will miss out on some colors (such as deep red), the result would be a "washed out" picture quality.
Different manufacturers use different measurement standards to specify color gamut. Such as — sRGB (most popular), NTSC 1953, DCI P3 Adobe RGB and rec.2020.
But don't worry, below is a chart that you can use to choose a TV with good color accuracy.
After color gamut, you should look at the static contrast specification as it impacts the picture quality substantially.
Why its important?
A TV with high enough static contrast ratio will produce natural deep blacks while a TV with low contrast ratio (<1000:1) will produce images that look muddy as shown in the below image.
As you imagine, this will rob your experience considerably.
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, thus lesser detail overall.
There is no mention of this specification in this TV's official specsheet. So we have to make an assumption again based on the TV's other specs. FYI — IPS panels come with a static contrast ratio between 700:1 - 1500:1. As for a 4K TV, we can imagine the ratio of Grundig 55GGU7900BA to be on the upper side, that is atleast 1200:1.
HDR is also supported on this TV in form of HDR and HLG (Hybrid Log Gamma).
As for brightness, it can go as bright as 250 nits. The backlight of this TV is powered by Direct LED technology.
If you are planning to use your TV only for content consumption, you can safely ignore these specifications. But if you are also going to use the TV for gaming or use it as a PC monitor, make sure to get a TV that features the lowest input lag and response time.
Sadly, Grundig did not specify the input lag on this unit. Now, since this is not a cheap TV from Grundig, input lag on this TV could be 20ms or below.
What is Input Lag and Why it matters ?
This lag is the amount of time at which your inputs changes the content of the TV. For casual Non-FPS games, input lag doesn't matter much.
Although for better experience, get a TV that comes with an input lag and response time of less than 20ms.
Ergonomics and Dimensions
Now, speaking of ergonomics — a VESA mount with interface size of 300 x 300 mm is provided for wall-mounting. Swivel, Tilt or Pivot features are not supported on this unit.
Vertically, the TV measures 55 inches and horizontally 49 inches. It weighs around 17.5 kgs.
Hardware and Audio
The internals of this TV is powered by a 4-Core CPU. However, we could'nt find any info about the RAM on this TV.
The UI on this TV is powered by Android TV Operating System.
For display connectivity, there are three HDMI 2.0 ports on this TV.
For connecting USB devices, you will have two USB 2.0 ports. Other connectivity ports include — 1x Satellite In (F-type), 1x Antenna (RF), 1x CI+ 1.3 and 1x Ethernet RJ45.
Regarding wireless connectivity on this TV, you will have — Wi-Fi (2.5Ghz only) and Bluetooth.
Coming to audio, it is packaged with 2 x 10W built-in speakers.
As for power consumption, it consumes 113.28 watts on average and 0.45 watts on standby.
For powering this unit, you will require either a 110V or 220V outlet @ 50Hz-60Hz.