The 55HL7300 is a 55 inch 4K TV from Hitachi. It was launched in 2021. It comes with a 10-bit IPS panel.
It can display a max resolution of 3840 x 2160 @ 60 Hz with a pixel density of 80 ppi.
Now, the next important specification of a display that defines picture quality is its Color Gamut.
Hitachi did not provide a color gamut specification for this TV. So we have to take a guess. Considering 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 quality on this TV should be Lifelike! Meaning it will produce accurate colors out of the box.
What Color Gamut means ?
Color gamut specification of a display is a measure of the range of colors that it can produce.
What this means is, this specification determines the ability of a TV 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.
Different manufacturers use different units to define color gamut. Such as — sRGB (standard RGB), NTSC 1953, DCI P3 to name a few.
But don't worry, below is a chart that you can use to choose a TV with good color accuracy.
Next in the list of important specifications is Static Contrast.
What is Static Contrast ?
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 might look muddy as shown in the below image.
As you imagine, this will rob your experience considerably.
Also, a TV with high constrast ratio enables 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.
This TV is rated with a static contrast ratio of 8000:1., enough to achieve deep blacks and eye-catching visuals. The panel comes with local dimming technology which is a plus.
HLG (Hybrid Log Gamma), HDR, HDR10 and Dolby Vision are also supported on this TV.
As for brightness, it is can produce a peak brightness of 350 nits. The panel of this TV is powered by Direct LED backlight.
If you are going to use your TV other than using it as a TV — say as a PC monitor or Gaming, you should take a TV with lowest input lag. For gaming, both the input lag and response time affects the performance.
Sadly, Hitachi did not specify the input lag on this unit. But since this is not a cheap TV from Hitachi, we can expect an input lag of less than 20ms.
What is Input lag ?
This lag is the amount of time at which inputs changes the content of the screen. For casual Non-FPS games, input lag doesn't matter much.
But ideally, look for a TV that features an input lag and response time of < 20ms.
Ergonomics and Dimensions
Now, speaking of ergonomics — a VESA mount with interface size of 200 x 200 mm is provided for wall-mounting. Swivel, Tilt or Pivot features are not supported on this unit.
The vertical and horizontal measurements of this TV are 48.54 inches and 29.76 inches respectively. It is 2.6 inches thick.
In total it weighs approximately 12.9 kgs including stand. Without stand, it weighs 10.4 KGs.
Hardware and Audio
The chipset of this TV is powered by a 4-Core CPU. However, Hitachi didn't provide any info on the RAM on this TV.
For display connectivity, there are three HDMI 2.0 (ARC; CEC) ports on this TV.
To connect USB devices, it includes two USB 2.0 ports. Other connectivity ports include — 1x Satellite In (Main — F-type female), 1x CI+ 1.4, 1x Antenna (RF) (female) and 1x Ethernet RJ45.
Wireless connectivity options on the Hitachi 55HL7300 include Wi-Fi (5Ghz + 2.5Ghz), Wifi-Direct, Bluetooth and DLNA.
The Audio unit of this TV is powered by 2 x 10W built-in speakers.
As for power usage, the TV consumes 82 Watts on average and 0.5 Watts on standby.
It supports a power outlet of 220 V - 240 V/50 Hz - 60 Hz.