Design
Curved No
The Hisense U6K has a simple design with thin bezels on three sides. The bottom bezel is slightly thicker but doesn't stand out much when watching TV. On its back, the TV has visible screws (shown here) around its border, which looks a bit cheap overall.
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Design
Uniformity Pictures N/A
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LEARN ABOUT ACCELERATED LONGEVITY TEST
Design
The TV comes with a pair of adjustable feet that don't take up a lot of space. They support the TV decently well, although it wobbles easily. There are two stand positions: the wide position, as shown above, which offers more stability and is great for wider tables, and a narrow position shown here, better for smaller tables.
The footprint of the 65-inch stand in the wide position is 46.5" x 12". In the narrow position, the 65-inch stand has a footprint of 27.8" x 12". In either position, the feet lift the TV about 3" above the table, so most soundbars fit in front without blocking the screen. Some longer soundbars don't fit between the feet when they're set in the narrow position.
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Design
Wall Mount VESA 400x300
The back has a flat metallic top part and a thicker plastic housing on the bottom half. Most of the inputs are side-facing and aren't set into the TV, so they're easy to access unless you have the TV mounted flush against the wall. Unfortunately, the TV doesn't have any clips or channels for cable management.
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Design
Borders 0.41" (1.0 cm)
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Design
Max Thickness 3.04" (7.7 cm)
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6.5 Design
The Hisense U6K has alright build quality. There's a bit of flex in the plastic portion of the back of the TV, but this isn't uncommon and won't cause any issues. The feet are sturdy and support the TV well, but there's some wobble, and it takes a few seconds to settle once it starts.
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8.7 Picture Quality
Contrast
Native Contrast
The Hisense U6K has an excellent contrast ratio with local dimming enabled, leading to deep blacks in a dark room, even when bright highlights are shown on the screen. With local dimming disabled, the TV's contrast ratio is decent, but blacks are raised and appear washed out when bright highlights are present.
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LEARN ABOUT CONTRAST
7.0 Picture Quality
The Hisense U6K has decent blooming performance. There's some visible blooming around bright highlights or in dark areas when they're next to brighter ones.
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5.5 Picture Quality
Local Dimming
Backlight
Dimming Zones Count Of Tested TV
The TV has sub-par lighting zone transitions. The leading edge of bright moving objects is visibly dimmer. For fast-moving small objects, the objects are almost completely obscured due to how dim they get in the transition.
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8.0 Picture Quality
Switching to Game Mode with VRR 'Off' makes no noticeable difference in dark scene performance. Game Mode disables local dimming if VRR is enabled, leading to worse contrast and black uniformity, but with no blooming or zone transitions.
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6.6 Picture Quality
Hallway Lights (~1950 cd/m²)
Yellow Skyscraper (~700 cd/m²)
Landscape Pool (~300 cd/m²)
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Peak 25% Window
Peak 50% Window
Peak 100% Window
Sustained 2% Window
Sustained 10% Window
Sustained 25% Window
Sustained 50% Window
Sustained 100% Window
Automatic Brightness Limiting (ABL)
The Hisense U6K has okay HDR brightness. It gets bright enough to make some highlights stand out, but smaller highlights don't pop against a dark background. Still, it's enough for a fairly satisfying HDR experience.
These measurements are after calibrating the HDR white point with the following settings:
- HDR Picture Mode: HDR Theater
- Backlight: Max
- Local Dimming: High
- Color Temperature: Low
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LEARN ABOUT HDR BRIGHTNESS
6.5 Picture Quality
Hallway Lights (~1950 cd/m²)
Yellow Skyscraper (~700 cd/m²)
Landscape Pool (~300 cd/m²)
Peak 2% Window
Peak 10% Window
Peak 25% Window
Peak 50% Window
Peak 100% Window
Sustained 2% Window
Sustained 10% Window
Sustained 25% Window
Sustained 50% Window
Sustained 100% Window
Automatic Brightness Limiting (ABL)
The TV's HDR brightness in Game Mode is okay. There's no noticeable difference in peak brightness from 'HDR Theater' mode. As Game Mode disables local dimming when VRR is enabled, these results are valid with VRR 'Off'.
These measurements are after calibrating the HDR white point, with the following settings:
- HDR Picture Mode: HDR Game
- Brightness: Max
- Local Dimming: High
- Color Temperature: Low
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8.4 Picture Quality
600 Nit Tracking Delta
1000 Nit Tracking Delta
4000 Nit Tracking Delta
The TV has great PQ EOTF tracking. It tracks the curve very well, although not perfectly, as all scenes are slightly overbrightened, especially in dark scenes. There's a slow roll-off when content approaches the TV's peak brightness, preserving bright details.
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LEARN ABOUT PQ EOTF TRACKING
7.5 Picture Quality
Real Scene Peak Brightness
Peak 2% Window
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Peak 50% Window
Peak 100% Window
Sustained 2% Window
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Sustained 25% Window
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Sustained 100% Window
Automatic Brightness Limiting (ABL)
The Hisense U6K has good SDR peak brightness. It gets bright enough to fight glare in a well-lit room and maintains its brightness well across different scenes, although smaller highlights are considerably dimmer than bigger ones.
These measurements are after calibration with the following settings:
- Picture Mode: Theater Night
- Backlight: 100
- Color Temperature: Low
- Gamma: 2.2
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LEARN ABOUT SDR BRIGHTNESS
8.8 Picture Quality
Wide Color Gamut
DCI P3 xy
DCI P3 uv
Rec 2020 xy
Rec 2020 uv
The Hisense U6K has an excellent color gamut, and it displays a wide range of colors with HDR content.
Unfortunately, the tone mapping is average with content mastered at a high brightness level, so some colors appear off. The results here are with a 75% stimulus corresponding to 1,000 cd/m² content. With dimmer content, the tone mapping is significantly better, as shown with this color gamut measured with a 50% stimulus instead, which corresponds to roughly 92.2 cd/m².
Overall, this means that the majority of HDR content is displayed well, with vivid colors that are displayed properly and accurately. Very bright scenes, however, are less accurate, as the TV sacrifices accuracy to reach the brightest highlights it can display. The measurements above are in the 'Native' Color Space as it's more accurate than 'Auto'.
The TV's color gamut changes as the window size changes. This impacts calibration readings, but for most people, this isn't an issue as the vast majority of content takes up 100% of the screen. You can see how the color gamut changes with the window size here.
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LEARN ABOUT COLOR GAMUT
7.3 Picture Quality
1,000 cd/m² DCI P3 Coverage ITP
10,000 cd/m² Rec 2020 Coverage ITP
White Luminance
Red Luminance
Green Luminance
Blue Luminance
Cyan Luminance
Magenta Luminance
Yellow Luminance
The color volume of this TV is decent. It displays a wide range of colors at all luminance levels, and dark saturated colors are displayed well thanks to the TV's excellent contrast.
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LEARN ABOUT COLOR VOLUME
8.2 Picture Quality
White Balance dE
Color dE
Gamma
Color Temperature
Picture Mode
Color Temp Setting
Gamma Setting
The Hisense U6K has impressive accuracy in SDR even before calibrating it. Gamma is very close to the 2.2 target for a moderately lit room, and the color temperature is nearly perfect. Color accuracy is great overall, and the white balance is very good: there are some slight accuracy errors here and there, but nothing dramatic. Some colors, like saturated yellows, blues, and greens, have more accuracy errors than others, but this isn't noticeable in actual usage.
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LEARN ABOUT PRE CALIBRATION
9.4 Picture Quality
White Balance dE
Color dE
Gamma
Color Temperature
White Balance Calibration
Color Calibration
The TV's calibration system is finicky, but it's rather straightforward once you figure it out. Effectively, when calibrating points between 55-80, each calibration point adjusts the point above it: 55 adjusts 60, 60 adjusts 65, etc. Even after calibration, the TV's color accuracy isn't perfect; saturated yellows, blues, and greens are still very slightly off.
You can see the full calibration settings we used here.
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LEARN ABOUT POST CALIBRATION
7.0 Picture Quality
50% Std. Dev.
50% DSE
5% Std. Dev.
5% DSE
The TV has decent gray uniformity. The backlight is visible on large areas of bright, uniform color, which is distracting when watching sports or browsing the web. Uniformity is better in dark scenes, although the sides of the screen are lighter than its center.
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LEARN ABOUT GRAY UNIFORMITY
6.5 Picture Quality
Std. Dev.
Native Std. Dev.
The TV has okay black uniformity. With local dimming disabled, the black uniformity is poor, as the entire screen is blue, with lighter bands near the TV's edges. Uniformity is much better with local dimming set to 'High', but it's only decent; the screen has a blue tint, and there's noticeable blooming around bright highlights.
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LEARN ABOUT BLACK UNIFORMITY
5.2 Picture Quality
Color Washout
Color Shift
Brightness Loss
Black Level Raise
Gamma Shift
Sadly, the TV has an inadequate viewing angle. The image fades and looks washed out as you move even slightly off-center. This makes it a poor choice for a wide seating arrangement, as anyone sitting off-center sees a degraded image.
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LEARN ABOUT VIEWING ANGLE
7.4 Picture Quality
Screen Finish
Total Reflections
Indirect Reflections
Calculated Direct Reflections
This TV has decent reflection handling. It handles moderate amounts of light very well and, combined with its good peak brightness, you won't have problems using it in most living rooms. However, don't place it immediately opposite bright lights or windows, as it struggles with handling that type of glare.
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LEARN ABOUT REFLECTIONS
7.5 Picture Quality
100% Black to 50% Gray 6.0
50% Gray to 100% White 8.0
100% Black to 50% Red 6.0
50% Red to 100% Red 10
100% Black to 50% Green 8.0
50% Green to 100% Green 6.0
100% Black to 50% Blue 8.0
50% Blue to 100% Blue 8.0
The TV has good HDR gradient handling. There's some banding in dark grays and reds, as well as in bright greens. Other color gradients have minimal banding.
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LEARN ABOUT HDR NATIVE GRADIENT
4.8 Picture Quality
Smoothing 3.0
Detail Preservation 9.0
Unfortunately, this TV's processing with low-quality content is poor. It just doesn't smooth out macro-blocking and pixelization well. You can see what it looks like with boosted exposure here.
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7.0 Picture Quality
The TV has decent upscaling capabilities. Fine details in upscaling content are preserved decently well, with some, but not excessive, blurring.
Sharpness processing was calibrated for low-resolution or low-bitrate content, with no over-sharpening, with the following setting:
- Sharpness: 10
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LEARN ABOUT UPSCALING: SHARPNESS PROCESSING
Picture Quality
Subpixel Layout
Type LED
Sub-Type
The Hisense U6K uses a BGR (blue-green-red) subpixel layout. For multimedia usage, this doesn't cause any issues, but it causes text clarity issues when you use this TV as a PC monitor. There are easy workarounds for these issues, however, and you can read about them here.
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7.6 Motion
80% Response Time
100% Response Time
The Hisense U6K has a good response time, and motion is fluid and smooth for the most part, with just a short blur trail behind fast-moving objects. Like many TVs, it's noticeably slower when coming out of a dark state, so there's some black smear in shadow details.
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LEARN ABOUT RESPONSE TIME
7.9 Motion
Flicker-Free
PWM Dimming Frequency
The Hisense U6K uses pulse width modulation (PWM) to dim its backlight. It flickers at 480Hz in every picture mode except FILMMAKER MODE, where it flickers at 600Hz. The TV's flicker frequency is high enough that it won't be distracting unless you're sensitive to flicker.
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LEARN ABOUT FLICKER-FREE
Motion
Optional BFI
Min Flicker For 60 fps
60Hz For 60 fps
120Hz For 120 fps
Min Flicker for 60 fps in Game Mode
The TV has an optional backlight strobing feature, commonly known as black frame insertion. This feature is meant to reduce persistence blur and improve the appearance of motion. With it enabled, the TV flickers at 60Hz, and it isn't very effective as it causes image duplication and even some smearing.
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LEARN ABOUT BLACK FRAME INSERTION (BFI)
Motion
Motion Interpolation (30 fps)
Motion Interpolation (60 fps)
The optional motion interpolation feature on this TV is poor overall. It struggles in most scenes, and there are noticeable artifacts around any fast-moving areas, characters, or objects.
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LEARN ABOUT MOTION INTERPOLATION
6.9 Motion
Frame Hold Time @ 24 fps
Frame Hold Time @ 60 fps
The TV's good response time results in an overall adequate stutter performance. There's some noticeable stutter in slow-panning shots in 24p content, like movies. The TV's stutter performance is exceptional with 60 fps content.
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LEARN ABOUT STUTTER
8.9 Motion
Judder-Free 24p
Judder-Free 24p via 60p
Judder-Free 24p via 60i
Judder-Free 24p via Native Apps
The TV removes judder from most sources automatically, without the need for any additional motion settings. However, it can't remove judder from 60Hz interlaced sources. Many cable boxes support either 720p or 1080i, so if that's your case, make sure you select 720p instead for a judder-free experience.
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LEARN ABOUT 24P JUDDER
7.1 Motion
Native Refresh Rate
Variable Refresh Rate
HDMI Forum VRR
FreeSync
G-SYNC Compatible
4k VRR Maximum
4k VRR Minimum
1080p VRR Maximum
1080p VRR Minimum
1440p VRR Maximum
1440p VRR Minimum
VRR + Local Dimming No
The Hisense U6K supports every VRR technology, which is great for gamers. The refresh rate range is narrow, so its usefulness is limited. It also doesn't support low framerate compensation in that range, so you'll see tearing if your game's frame rate drops below 48Hz.
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LEARN ABOUT VARIABLE REFRESH RATE
9.6 Inputs
1080p @ 60Hz
1080p @ 60Hz Outside Game Mode
1080p @ 120Hz
1080p @ 144Hz
1440p @ 60Hz
1440p @ 120Hz
1440p @ 144Hz
4k @ 60Hz
4k @ 60Hz + 10-Bit HDR
4k @ 60Hz @ 4:4:4
4k @ 60Hz Outside Game Mode
4k @ 60Hz With Interpolation
4k @ 120Hz
4k @ 144Hz
8k @ 60Hz
This TV has incredibly low input lag, ensuring a responsive gaming and desktop experience. The TV has a 1080p @ 120Hz mode, but it doesn't work well, with very high input lag and diminished text clarity. The 'High Refresh Rate' mode slightly lowers input lag at 1080p @ 120Hz but dramatically increases it in every other case. Here are some input lag measurements with 'High Refresh Rate' mode enabled:
- 1080p @ 120Hz: 28.7 ms
- 1080p @ 60Hz: 42 ms
- 4k @ 60Hz: 24.4 ms
- 1440p @ 60Hz: 27.7 ms
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LEARN ABOUT INPUT LAG
7.1 Inputs
Resolution 4k
480p @ 59.94Hz (Widescreen)
720p @ 59.94Hz
1080p @ 60Hz @ 4:4:4
1080p @ 120Hz
1080p @ 144Hz
1440p @ 60Hz
1440p @ 120Hz
1440p @ 144Hz
4k @ 60Hz
4k @ 60Hz @ 4:4:4
4k @ 120Hz
4k @ 120Hz @ 4:4:4
4k @ 144Hz
8k @ 30Hz or 24Hz
8k @ 60Hz
The TV supports most common resolutions. It displays chroma 4:4:4 signals properly at all resolutions except 1080p @ 120Hz, which is essential for clear text from a desktop PC. While the TV seems to support 1080p @ 120Hz, setting it to that resolution results in very high input lag, skipped frames, and a muddier image overall. If you'd like a TV with a faster 120Hz refresh rate, look up the similarly priced TCL Q5/Q550G QLED.
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LEARN ABOUT SUPPORTED RESOLUTIONS
Inputs
Auto Low Latency Mode (ALLM)
4k @ 120Hz
1440p @ 120Hz
1080p @ 120Hz
HDR
VRR
This TV can't take full advantage of the PS5. It supports a few advanced features, including HDR and VRR, but it's limited to a 60Hz refresh rate. While 1080p @ 120Hz does show up as available on the console, running the TV at that resolution results in frame skipping, slow input lag, and a muddier image overall. As such, it's best suited for gamers who prefer the 'Graphics' preset in their games and not competitive gamers who prefer 'Performance' presets with higher frame rates.
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Inputs
Auto Low Latency Mode (ALLM)
4k @ 120Hz
1440p @ 120Hz
1080p @ 120Hz
HDR
VRR
This TV can't take full advantage of the Xbox Series X|S. It supports a few advanced features, including HDR and VRR, but it's limited to a 60Hz refresh rate. While 1080p @ 120Hz does show up as available on the console, running the TV at that resolution results in frame skipping, slow input lag, and a muddier image overall. As such, it's best suited for gamers who prefer the 'Graphics' preset in their games over higher frame rates.
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Inputs
HDR10
HDR10+
Dolby Vision
HLG
HDMI 2.0 Full Bandwidth
HDMI 2.1 Class Bandwidth
CEC Yes
HDCP 2.2 Yes (HDMI 1,2,3,4)
ATSC Tuner
USB 3.0
Variable Analog Audio Out Yes
Wi-Fi Support Yes (2.4 GHz, 5 GHz)
This TV is limited to HDMI 2.0 bandwidth on all four HDMI ports.
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Inputs
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Inputs
HDMI 4
USB 2
Digital Optical Audio Out 1
Analog Audio Out 3.5mm 1
Analog Audio Out RCA 0
Component In 0
Composite In 1 (adapter required, not incl.)
Tuner (Cable/Ant) 1
Ethernet 1
DisplayPort 0
IR In 0
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Inputs
ARC/eARC Port
eARC: Dolby Atmos Over Dolby Digital Plus
eARC: Dolby Digital Plus 7.1
eARC: LPCM 7.1 Over Dolby MAT
eARC: Dolby TrueHD 7.1
eARC: DTS:X Over DTS-HD MA
eARC: DTS-HD Master Audio 7.1
eARC: LPCM Channels (Bitstream)
ARC: Dolby Digital 5.1
ARC: DTS 5.1
Optical: Dolby Digital 5.1
Optical: DTS 5.1
Unfortunately, this TV can't passthrough some 7.1 audio formats like DTS:X or DTS-HD MA, and is instead limited to 5.1 channel audio. For the best audio experience, connecting your external source directly to your soundbar or home theater receiver is best.
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6.6 Sound Quality
Low-Frequency Extension
Std. Dev. @ 70
Std. Dev. @ 80
Std. Dev. @ Max
Max
Dynamic Range Compression
The TV's frequency response is okay overall. It has a very high low-frequency extension (LFE), meaning there's very little thump or rumble. Above the LFE, the frequency response is well-balanced, ensuring that most dialogue sounds crisp and clear. It gets moderately loud, but there's significant compression at max volume.
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LEARN ABOUT FREQUENCY RESPONSE
7.1 Sound Quality
Weighted THD @ 80
Weighted THD @ Max
IMD @ 80
IMD @ Max
This TV has decent distortion performance. There's some audible total harmonic distortion, but mainly at high volume levels; it's not noticeable at moderate volume.
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LEARN ABOUT DISTORTION
8.0 Smart Features
Smart OS Google TV
Version 11
Ease of Use
Smoothness
Time Taken to Select YouTube
Time Taken to Change Backlight
Advanced Options
The Hisense U6K uses version 11 of Google's popular Google TV OS. It's relatively easy to use and especially fast and smooth, with a large selection of apps.
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0 Smart Features
Ads
Opt-out
Suggested Content in Home
Opt-out of Suggested Content
Like most TVs on the market, this one has ads throughout the interface, and you can't disable them.
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LEARN ABOUT AD-FREE
9.0 Smart Features
App Selection
App Smoothness
Cast Capable
USB Drive Playback
USB Drive HDR Playback
HDR in Netflix
HDR in YouTube
The TV has a great selection of streaming apps, with every popular streaming app being present. The interface is very smooth and pleasant to use.
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8.0 Smart Features
Size
Voice Control
CEC Menu Control
Other Smart Features
Remote App Hisense RemoteNOW
The TV comes with a great remote. Like most modern remotes, it lacks a numpad, and there are quick-access buttons to popular streaming services. The remote has a built-in mic, and so does the TV for hands-free voice control, giving you access to Google Assistant and Alexa, so you can ask it to search for content, open apps, ask for the time or the weather, and switch inputs.
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Smart Features
There's a button underneath the center of the TV to turn the TV On/Off and switch inputs. There's another button, seen here, to turn off the mic built into the TV if you're concerned about privacy.
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Smart Features
- Remote
- 2x AAA batteries
- Power cable
- User guides
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Smart Features
Power Consumption 70 W
Power Consumption (Max) 187 W
Firmware V0000.01.00S.N0615
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