Launched in the year 2021, the 75U9GQ is a 75" 4K TV from Hisense. It comes with a 10-bit IPS panel with Anti-glare/Matte finish.
The max. resolution it can achieve is 3840 x 2160 with a refresh rate of 120 Hz and a pixel density of 59 ppi.
Picture Quality
After screen size and resolution, the next most important specification to look for in a display is its Color Reproduction, which is defined by its color gamut specification.
Speaking of which, this TV comes with a DCI P3 gamut coverage of 96%. This is equivalent to 130.91% sRGB. The color quality on this TV will be Lifelike!
Understanding the Color Gamut Specification
Color gamut spec of a TV indicates the range of colors that the TV can display.
In layman terms, this specification indicates 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), thus producing a "washed out" picture.
It is specified in different units - sRGB(most popular), NTSC 1953, DCI P3 etc.
For example, the color gamut of this TV is specified in terms of DCI P3.
But you don't need to worry about that, below is a chart that will help you choosing a TV with good color accuracy.
Other than color accuracy, you should look at the static contrast specification as it influences the picture quality substantially.
The importance of static contrast ratio
A TV with low static contrast ratio will not produce deep blacks and can bleed backlight as shown below:

The above TV's static contrast is rated 800:1. So make sure you get a TV with a static contrast of >= 1000:1. 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.
This TV is rated with a static contrast ratio of 1200 : 1. — good enough for a TV in this range. For the record, it also comes with local dimming technology which is a plus.
HLG (Hybrid Log Gamma), HDR10+, Dolby Vision, Dolby Vision IQ and HDR10 are also supported on this TV, so that's a plus.
Coming to brightness, the peak luminance the Hisense 75U9GQ can produce is 3000 nits with the help of Mini LED backlight. This amount of brightness is good enough even for a well-lit room!
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 going to use the TV for gaming or use it as a PC monitor, you should take a TV that features the lowest input lag and response time.
The input lag on this TV is 20 ms and its minimum response time is N/A. It is acceptable for casual and non-FPS games but is not suitable for competitive or FPS games.
What is Input lag ?
This lag is the amount of time at which device inputs changes the content of the TV. For casual Non-FPS games, input lag doesn't matter much.
For best of both worlds, get a TV that comes with an input lag and response time of < 20ms.
Ergonomics and Dimensions
Now, speaking of ergonomics — If you plan to wall mount the TV, you can make use of the VESA mount provided with this TV, which by the way has an interface size of 600 x 400 mm. There is no Swivel, Tilt or Pivot feature support on this TV.
Vertically, the TV measures 75 inches and horizontally 66.1 inches.
In terms of thickness, it is just 2.76 inches thick. In total it weighs approximately 53.7 KGs including stand. Without stand, it weighs 44.7 Kgs. So plan your space accordingly.
Hardware and Audio
The TV is powered by 4-Core (2x ARM Cortex-A73 + 2x ARM Cortex-A52) CPU while its graphics engine is handled by a (ARM Mali-G51) GPU.. However, we could'nt find any specification about the total available RAM on the TV's official specsheet.
To power its UI, the TV runs VIDAA U5.0 Operating System.
For display connectivity, there are four HDMI 2.0 ports and one AV Composite In (Video + L/R) (mini) port on this TV.
To connect USB devices, you have — 1x USB 2.0 and 1x USB 3.0. Other connectivity ports include — 1x Satellite In (F-type female), 1x Antenna (RF), 1x CI+ 1.4 and 1x Ethernet RJ45 (100 Mbps).
Regarding wireless connections, the manufacturer has provided a 5Ghz Wi-Fi, 2.5 Ghz Wi-Fi, Wifi-Direct and Bluetooth 5.0.
Now, for audio, Hisense has provided 2 x 15W built-in speakers on the 75U9GQ. It also comes with a built-in sub-woofer. So you may not have to invest on any external sound system.
Now, coming to power usage, this TV consumes 155W on average and 0.5W on standby.
For powering this unit, you will require an 100 V - 120 V/50 Hz - 60 Hz outlet.