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    Table of Contents
  1. Intro
  2. Design
    1. Stand
    2. Back
    3. Borders
    4. Thickness
  3. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Peak Brightness
    4. HDR Peak Brightness
    5. Gray Uniformity
    6. Viewing Angle
    7. Black Uniformity
    8. Gradient
    9. Pre Calibration
    10. Post Calibration
    11. 480p Input
    12. 720p Input
    13. 1080p Input
    14. 4k Input
    15. Color Gamut
    16. Color Volume
    17. Image Retention
    18. Reflections
    19. 3D
    20. Pixels
  4. Motion
    1. Motion Blur
    2. Image Flicker
    3. 24p Playback
    4. Motion Interpolation
  5. Inputs
    1. Input Lag
    2. Supported Resolutions
    3. Side Inputs
    4. Rear Inputs
    5. Total Inputs
    6. Inputs Specifications
  6. Sound Quality
    1. Frequency Response
    2. Total Harmonic Distortion
  7. Smart Features
    1. Apps
    2. Ads
    3. TV Controls
    4. Remote
    5. In The Box
    6. Misc
  8. Sizes and Variants
  9. Compared
  10. Conclusion
  11. Q&A
Reviewed on Oct 28, 2016 , Eric Bousquet

Samsung KU6600
TV REVIEW

Usage Ratings
7.4Mixed Usage
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What it is General purpose. The TV will be used for a variety of content and usages. Movies at night, TV shows during the day, video games from time to time, etc.
Score components:
6.9Movies
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What it is Movies in the dark. The TV will be used for watching movies in a controlled environment, directly in front, in a home theater way. Mostly only high quality content, like Blu-rays, UHD Blu-rays, streaming and a little bit of HDR.
Score components:
7.2TV Shows
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What it is TV Shows in a bright living room. The TV will be used in to watch TV shows, in a bright room during the day, from multiple viewing positions at different angles. The content watched has an average quality: cable, streaming, SD channels, etc.
Score components:
7.2Sports
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What it is Sports in a living room. The TV will be used to watch sports during the day, like football or hockey. Usually watched with a group, so from multiple viewing position.
Score components:
8.2Video Games
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What it is Video games. The TV will be used to play video games, directly in front, in a controlled light environment. Usually fast games, like online FPS, where motion blur and input lag is important.
Score components:
7.3HDR Movies
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What it is HDR Movies and TV shows. The TV will be used to watch 4k UHD HDR content, with a wide color gamut and a high peak brightness. Either via UHD Blu-rays or HDR streaming.
Score components:
7.9HDR Gaming
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What it is HDR Gaming. The TV will be used to play HDR video games using consoles that support it or on current generation gaming PCs. Xbox One S, PS4 Pro, GTX 10 series and AMD RX series graphics cards.
6.9PC Monitor
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What it is PC Monitor. The TV will be used as a PC monitor, from 2-3 feet away, either for productivity purposes or gaming. Sharp text is important, as well as a high resolution.
Score components:
This tv has been discontinued.
It was replaced by the Samsung MU6500

Type : LED
Resolution : 4k
Refresh Rate : 60 Hz

The Samsung KU6600 is a UHD LED TV with good picture quality. It is almost the same TV as the often recommended Samsung KU6300, with a curve. It provides good performance in a dark room, and supports a HDR10 signal but doesn't benefit from the extra information. Unfortunately the motion handling isn't as good as some other TVs and the image degrades when viewed at an angle.

Test Results
Design 8.5
Picture Quality 7.4
Motion 5.8
Inputs 8.2
Sound Quality 6.4
Smart Features 8.5
Pros
  • Good dark scene performance
  • Low input lag
Cons
  • Picture quality degrades at an angle
  • Brighter reflections than average
  • Dirty screen effect is visible

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55" UN55KU6600
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8.5

Design

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Score components: Subjectively assigned
Samsung KU6600 Design Picture
Curved : Yes

The design is similar to most other Samsung TVs. It has a central stand which looks quite good and works well for those with smaller tables. 

Stand
Samsung KU6600 Stand Picture

The stand is very similar to last year's JS8500. It attaches to the centre of the TV but is still quite wide. This does result in quite good support.

Footprint of the 55" TV stand: 13.0" x 34.1"

Back
Samsung KU6600 Back Picture
Wall Mount : Vesa 400x400

The back of the TV is corrugated, like the Samsung KU6500. The inputs are located on the right side of the TV.

Borders
Samsung KU6600 Borders Picture
Borders : 0.71" (1.8 cm)

The borders are an average thickness. They have a brushed metal look, which is good.

Thickness
Samsung KU6600 Thickness Picture
Max Thickness : 3.46" (8.8 cm)

The curve does make the TV appear thicker than usual, but it also has a thicker back than most Samsung TVs such as the KU7000 or the KS series.

7.4

Picture Quality

The Samsung KU6600 has a good picture quality. The blacks are really deep and dark scene performance is great due to the high native contrast ratio and also due to the excellent black uniformity. Even though the KU6600 can display HDR content, the performance is restricted by the lack of local dimming, the average peak brightness and the limited color gamut. Blu-rays look really good on this TV and even lower resolution content like DVDs look great once upscaled to a 4k resolution. Finally, this TV might not be the best to watch sport with a lot of friends, since dirty screen effect is noticeable and also because it has a relatively narrow viewing angle, diminishing the picture quality a lot when viewed from the side.

9.1 Contrast
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What it is: Brightness difference between white and black. This is the main component of picture quality.
When it matters: Always, but especially when watching dark scenes.
Score components:
Samsung KU6600 Checkerboard Picture
Native Contrast
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What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
6162 : 1

The native contrast ratio is excellent for the KU6600 TV. Blacks look very deep which should provide a very good dark room performance. Dark scene in movies will be especially very nice without too much loss of detail in the very dark scenes.

0 Local Dimming
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What it is: The lights behind the LCD layer adapt to the picture displayed, improving the contrast ratio.
When it matters: Dark scenes viewed in a dark room.
Score components: Subjectively assigned
Local Dimming
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What it is: Whether it has a feature that controls the LEDs behind the LCD layer, to match the picture and darkens the dark portion of it.
When it matters: On LED TVs only. Dark scenes viewed in a dark room.
:
No
Backlight
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What it is: Configuration of the lights of the backlight.
When it matters: Effectiveness of the local dimming.
Good value: Full-array/direct lighting is better for local dimming. As for the uniformity of the screen, it depends on the implementation. Some edge-lit TVs have more uniform blacks than some full-array TVs.
:
Direct

The KU6600 doesn't support any local dimming features. The video is for reference only.

Note that on this set, we did notice some dimming occurring automatically. This is due to 'CE Dimming' often found on Samsung TVs, but this is not a local dimming feature. The only way to disable 'CE Dimming' is to put the TV in PC mode.

7.8 SDR Peak Brightness
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What it is: How bright the screen can get. Measured with local dimming and with SDR content.
When it matters: Bright living rooms; bright objects; SDR content.
SDR Real Scene Peak Brightness
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What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. This scene was selected to represent a more regular movie condition. All measurement are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming, max backlight and over SDR signal. Scene: here.
When it matters: When watching movies or watching TV show in SDR.
:
454 cd/m2
SDR Peak 2% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, present on screen for a short time; especially for SDR content.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
219 cd/m2
SDR Peak 10% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, present on screen for a short time; especially for SDR content.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
381 cd/m2
SDR Peak 25% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright rooms; bright objects in SDR video.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
474 cd/m2
SDR Peak 50% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright rooms.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
472 cd/m2
SDR Peak 100% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright rooms
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
472 cd/m2
SDR Sustained 2% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, persistent throughout a scene; especially for SDR content.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
219 cd/m2
SDR Sustained 10% Window
Show Help
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, persistent throughout a scene; especially for HDR content.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
381 cd/m2
SDR Sustained 25% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright rooms; bright objects in SDR video.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
474 cd/m2
SDR Sustained 50% Window
Show Help
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright rooms.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
472 cd/m2
SDR Sustained 100% Window
Show Help
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright rooms.
Good value: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
472 cd/m2

The peak brightness is average and almost the same in SDR and HDR, which is a good thing for when you watch normal content. Some HDR TVs can only obtain max peak brightness when an HDR signal is detected leaving normal peak brightness much lower.

7.7 HDR Peak Brightness
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What it is: How bright the screen can get. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright living rooms; bright objects; HDR content.
HDR Real Scene Peak Brightness
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What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. This scene was selected to represent a more realistic movie condition. All measurement are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming, max backlight and over HDR signal. Scene: here.
When it matters: When watching movies or watching TV show in HDR.
:
426 cd/m2
HDR Peak 2% Window
Show Help
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright highlights, present on screen for a short time; especially for HDR content.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
207 cd/m2
HDR Peak 10% Window
Show Help
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright objects, present on screen for a short time; especially for HDR content.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
360 cd/m2
HDR Peak 25% Window
Show Help
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms; bright objects in HDR video.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
450 cd/m2
HDR Peak 50% Window
Show Help
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
445 cd/m2
HDR Peak 100% Window
Show Help
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
444 cd/m2
HDR Sustained 2% Window
Show Help
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright highlights, persistent throughout a scene; especially for HDR content.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
207 cd/m2
HDR Sustained 10% Window
Show Help
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright objects, persistent throughout a scene; especially for HDR content.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
360 cd/m2
HDR Sustained 25% Window
Show Help
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms; bright objects in HDR video.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
450 cd/m2
HDR Sustained 50% Window
Show Help
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
445 cd/m2
HDR Sustained 100% Window
Show Help
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
444 cd/m2

The peak brightness is average for the KU6600 TV. The smaller size windows peak brightness is relatively lower than the rest of the other test windows. This is due to the strong 'CE dimming' implemented on this TV, making the screen dim a lot when displaying any scene with only a small bright highlight on a generally dark screen.

6.7 Gray Uniformity
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What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
Samsung KU6600 50% Uniformity Picture
50% Std. Dev.
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What it is: Average squared difference of pixels when displaying a mid 50% gray.
When it matters: Solid colors. Sports, panning shots.
Good value: < 2.5%
Noticeable difference: 1%
:
4.203 %
50% DSE
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What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Solid colors. Sports, panning shots.
Good value: < 0.165%
Noticeable difference: 0.025%
:
0.207 %

Gray uniformity is average for this Samsung TV. Like many other mid range direct lit LED TVs, the rows of LEDs of the backlight drive can be seen. Both left and right borders of the TV are darker than the center with 3 horizontals bands which are darker that the rest of the screen. Some warmer spots are also visible here and there.

Dirty screen effect is visible and is relatively comparable to what you get on the Samsung KU6300. Sport fans will notice it when watching sports like hockey or football, but during movies or other TV shows, it should still be acceptable.

4.3 Viewing Angle
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What it is: Color accuracy when viewed from the side.
When it matters: Large living rooms with multiple viewing positions.
Score components:
LCD Type
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What it is: Type of LCD technology used by the TV.
When it matters: Different technologies have different viewing angle properties.
Good value: IPS maintains good color accuracy at an angle, but has a poor contrast ratio from in front. VA has great picture quality in front, but loses saturation at an angle.
:
VA
Color Shift
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the TV. 0 ° means directly facing the TV. Measurements are up to a maximum of 75 °.
When it matters: Large living rooms with multiple viewing positions.
Good value: > 50°
Noticeable difference: 10°
:
26 °
Brightness
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the TV. 0 ° means directly facing the TV. Measurements are up to a maximum of 75 °.
When it matters: Large living rooms with multiple viewing positions.
Good value: > 50°
Noticeable difference: 10°
:
31 °
Black Level
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What it is: Angle where the black level drops to 50% of the black level directly in front of the TV. 0 ° means directly facing the TV. Measurements are up to a maximum of 75 °.
When it matters: Large living rooms with multiple viewing positions.
Good value: > 50°
Noticeable difference: 10°
:
20 °

Viewing angle is average but is in line with some of the best 2016 Samsung LED TVs. When viewed from the side, the contrast diminishes considerably and the colors lose saturation, leaving the screen looking much darker than when it is when viewed front straight on.

9.5 Black Uniformity
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What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
Samsung KU6600 Native Black Uniformity Picture
Native Std. Dev.
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What it is: Average of the squared difference of the blacks.
When it matters: Dark scenes viewed in a dark room.
Good value: < 2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
0.672 %

Black uniformity is also very good on this set. When looking at our test picture, some faint clouding can be seen in the top left part of the screen, but this is the only moment that we could really notice this. No clouding could be seen while watching normal content nor even when looking at our test image.

9.0 Gradient
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What it is: How finely levels of color can be displayed.
When it matters: Details in shadows, sky and skin tones. Matters more for HDR content.
Score components: Subjectively assigned
Samsung KU6600 Gradient Picture
Color Depth
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What it is: Number of bits per pixel to represent a specific color. Note: we consider 8-bit with dithering to be equivalent to 10-bit, as long as the 10-bit gradient looks smooth.
When it matters: HDR content like UHD Blu-ray players. Won't matter for cable TV, regular Blu-ray movies, video game consoles or content displayed from a Windows PC. Those are limited to 8-bit color.
Good value: 10-bit.
Noticeable difference: 1 bit.
:
10 Bit

The KU6600 can display our test image without too many problems and without any gradation marks normally seen on an 8 bit panel. Like the Samsung KU6300, there are some little imperfections in the darker shades and especially in the green, but nothing that would really be noticeable when watching normal content.

8.3 Pre Calibration
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What it is: TV's color accuracy before a full calibration. Only the picture mode and backlight level were changed.
When it matters: All video on an uncalibrated TV. This represents most people's use cases.
Score components:
Samsung KU6600 Pre Calibration Picture Samsung KU6600 Pre Gamma Curve Picture Samsung KU6600 Pre Color Picture
White Balance dE
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What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
3.82
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
2.35
Gamma
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What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.11

Prior to calibration the results are quite good. The white balance is a little bit too warm, but for most people a calibration is not necessary.

9.8 Post Calibration
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What it is: TV's color accuracy after a full calibration with a spectrophotometer.
When it matters: All video on a TV that has been professionally calibrated. This isn't that useful, because most TVs can achieve a pretty good calibration if you spend enough time on them.
Score components:
Samsung KU6600 Post Calibration Picture Samsung KU6600 Post Gamma Curve Picture Samsung KU6600 Post Color Picture
White Balance dE
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What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.21
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
0.38
Gamma
Show Help
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.20

Calibration is relatively easy. The white balance isn't as responsive as some other Samsung TVs but provided good results. You can see our recommended settings here.

8.0 480p Input
Show Help
What it is: Quality of a 480p input.
When it matters: Standard definition TV, DVDs.
Score components: Subjectively assigned
Samsung KU6600 480p Picture

Upscaling of low quality content such as DVDs is good. Details are preserved well.

8.0 720p Input
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What it is: Quality of a 720p input.
When it matters: HD channels, some streaming videos.
Score components: Subjectively assigned
Samsung KU6600 720p Picture

720p content looks good once upscaled. Image remains clear. Some halo artifacts can be seen.

9.0 1080p Input
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What it is: Quality of a 1080p input.
When it matters: Blu-rays, streaming video, video files, video games.
Score components: Subjectively assigned
Samsung KU6600 1080p Picture

1080p content such as Blu-rays look good. The image remains clear.

10 4k Input
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What it is: Quality of a 4k UHD input.
When it matters: Streaming video, UHD Blu-rays, some PCs.
Score components: Subjectively assigned
Samsung KU6600 4k Picture

No issues can be seen with native 4k content.

7.0 Color Gamut
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What it is: How many colors the TV can display.
When it matters: HDR content. Includes some streaming videos and UHD Blu-rays.
Score components:
Wide Color Gamut
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What it is: Whether the TV has an option to enable wide color gamuts.
When it matters: HDR content. Includes some streaming videos and UHD Blu-rays.
:
No
Samsung KU6600 Color Gamut DCI-P3 Picture
DCI P3 xy
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What it is: Coverage of the DCI P3 colorspace on CIE 1931 xy.
When it matters: DCI P3 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
77.85 %
DCI P3 uv
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What it is: Coverage of the DCI P3 colorspace on CIE 1976 u' v'.
When it matters: DCI P3 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
85.58 %
Rec 2020 xy
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What it is: Coverage of the Rec.2020 colorspace on CIE 1931 xy.
When it matters: Rec.2020 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
55.10 %
Rec 2020 uv
Show Help
What it is: Coverage of the Rec.2020 colorspace on CIE 1976 u' v'.
When it matters: Rec.2020 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
60.61 %

Doesn't support a wide color gamut. This test was performed with a HDR10 signal. This result is good enough for Rec. 709 content, but will not display an increased range of colors for HDR.

5.5 Color Volume
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What it is: How many colors a TV can display at different luminosity levels.
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
Samsung KU6600 P3 Color Volume Picture
Normalized DCI P3 Coverage
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What it is: How much of the DCI-P3 colorspace a TV can display at different luminosity levels
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
Good value: 80 %
Noticeable difference: 5 %
:
61.756 %
10,000 cd/m² DCI P3 Coverage
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What it is: How much of the DCI-P3 colorspace a TV can display at different luminosity levels when compared to an ideal 10,000 nit TV
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
:
33.226 %
Samsung KU6600 2020 Color Volume Picture
Normalized Rec 2020 Coverage
Show Help
What it is: How much of the Rec. 2020 colorspace a TV can display at different luminosity levels
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
Good value: 80 %
Noticeable difference: 5 %
:
45.696 %
10,000 cd/m² Rec 2020 Coverage
Show Help
What it is: How much of the DCI-P3 colorspace a TV can display at different luminosity levels when compared to an ideal 10,000 nit TV
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
:
25.041 %

Similar performance to other TVs without wide color gamut support, such as the KU6300. Fine for SDR content but can't produce a wide range of colors for HDR.

10 Image Retention
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What it is: How much a static image is retained on a TV screen after a certain amount of time.
When it matters: When watching TV show, playing video games or when using your TV as a PC monitor.
IR after 0 min recovery
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What it is: Image retention measured right after the static image exposure, without recovery time.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.000 %
IR after 2 min recovery
Show Help
What it is: Image retention measured after a recovery time of 2 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect
Noticeable difference: 0.015%
:
0.000 %
IR after 4 min recovery
Show Help
What it is: Image retention measured after a recovery time of 4 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.000 %
IR after 6 min recovery
Show Help
What it is: Image retention measured after a recovery time of 6 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.000 %
IR after 8 min recovery
Show Help
What it is: Image retention measured after a recovery time of 8 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.000 %
IR after 10 min recovery
Show Help
What it is: Image retention measured after a recovery time of 10 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.000 %

7.0 Reflections
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What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
Samsung KU6600 Reflections Picture Samsung KU6600 Bright Room Picture
Reflection
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What it is: Ratio of ambient light reflected by the TV.
When it matters: Ambient light in the room.
Good value: < 1%
Noticeable difference: 0.5%
:
2.4 %
Screen Finish
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What it is: Type of coating on the screen.
When it matters: Bright objects in the direct reflection path (for example, opposite the TV).
Good value: Glossy is good for ambient light, but not for direct reflections.
:
Semi-gloss

The TV has a semi-gloss finish. This helps to diffuse direct reflections across the screen, making them less intense. It is more reflective than most other TVs, and is better suited to a room without too much direct light.

0 3D
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What it is: Optional 3D video capability on TV.
When it matters: 3D movies and videos.
Score components: Subjectively assigned
3D
Show Help
What it is: If it can display a picture in 3D.
When it matters: 3D movies & videos.
:
No
3D Type
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What it is: The 3D technology used by the TV.
When it matters: 3D movies & videos.
Good value: Active have better resolution, but flickers. Passive is more comfortable, but loses half the vertical resolution.
:
No
2D to 3D
Show Help
What it is: Feature that converts 2D content to 3D.
When it matters: If you want to watch 2D content in 3D. Note that the quality is not as good as that of native 3D.
:
No

This TV doesn't support 3D.

Pixels
5.8

Motion

Motion performance is average. Some blur can be seen following fast moving objects, which may be an issue for sports or fast paced games. Judder is present when watching movies from all sources, but this isn't an issue as most people aren't sensitive to it. Some motion interpolation features are available for those who like the soap opera effect.

7.1 Motion Blur
Show Help
What it is: Amount of blur on fast movement.
When it matters: Sports, video games.
Score components:
Samsung KU6600 Motion Blur Picture Samsung KU6600 Response Time Chart
Response Time
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What it is: How quickly pixels can change color.
When it matters: Fast movement.
Good value: < 20ms
Noticeable difference: 10ms
:
22.0 ms
Overshoot
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What it is: When TV’s pixels adjust too far; how quickly they come back.
When it matters: Fast movement.
Good value: < 10ms
Noticeable difference: 10ms
:
0.0 ms

The motion performance of the KU6600 is average. Some motion blur can be noticed following moving objects. For most people this won't be an issue, but may be distracting for fast paced content. The backlight uses PWM flickering to dim below about 50%. This can be seen in the repetitions following the logo. This is a bit worse than the similar model KU6300.

4.8 Image Flicker
Show Help
What it is: Luminosity pattern when displaying images
When it matters: Sports, video games, when TV is used as a PC monitor
Score components:
Samsung KU6600 Backlight Picture
PWM Dimming Frequency
Show Help
What it is: Flickering pattern at different luminosities.
When it matters: For people sensitive to flickering.
Good value: N/A or high frequencies (> 300 Hz)
:
120 Hz
BFI
Show Help
What it is: Option to turn screen black between frames
When it matters: Reduces eye tracking blur in sports or video games
Good value: Yes
:
Yes
Samsung KU6600 BFI Picture Samsung KU6600 BFI Frequency Picture
BFI Frequency
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What it is: Lowest possible frequency of flickering pattern
When it matters: Reduces eye tracking blur in sports or video games
Good value: 60 Hz
:
60 Hz
BFI In Game Mode
Show Help
What it is: Option to insert black frames when in the best settings for gaming
When it matters: Reducing eye tracking blur for video games
Good value: Yes
:
No

The KU6600 uses PWM at 120Hz to dim the backlight. It is also possible to enable black frame insertion to clear up moving images, but this produces a visible flicker. Unfortunately this isn't available when in game mode.

0 24p Playback
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What it is: Whether 24p content can play without any judder.
When it matters: Only 24p content (mostly just movies).
Judder-free 24p
Show Help
What it is: Judder-free movies over 24p signal.
When it matters: Blu-ray and DVD movies; 24 hz PC signal.
:
No
Judder-free 24p via 60p
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What it is: Judder-free movies over 60p signal.
When it matters: Movies from streaming devices (Apple TV, Fire TV, etc.); 60 hz PC signal.
:
No
Judder-free 24p via 60i
Show Help
What it is: Judder-free movies over 60i signal.
When it matters: Movies from cable/satellite boxes.
:
No

Movies from any source play with some judder. Most people aren't sensitive to it, so this isn't an issue.

5.0 Motion Interpolation
Show Help
What it is: Also known as 'Soap Opera Effect'. It is an optional feature that increases the frame rate of the video, smoothing movement.
When it matters: If you like the look of smoothed video. Not everyone does.
Motion Interpolation (30 fps)
Show Help
What it is: Whether the TV can take a 30 fps input and heighten the frame rate to at least 60 fps.
When it matters: 30 fps or lower videos. Includes movies, TV shows, some video games.
:
Yes
Samsung KU6600 Motion Interpolation (30 fps) Picture
Motion Interpolation (60 fps)
Show Help
What it is: Whether the TV can take a 60 fps input and heighten the frame rate to at least 100 fps.
When it matters: 60 fps videos. Includes some video games, some sports channels.
:
No

The KU6600 has a 60Hz panel, which is able to interpolate lower refresh rate content for those who enjoy the soap opera effect.

8.2

Inputs

Show Help
Score components:

The KU6600 is good TV for those looking for a computer monitor or to pair your latest generation gaming console. It can display with high detail pretty much all the most demanding resolutions and input lag is also great even when HDR is detected. Even though the number of HDMI ports is limited, they are all fairly easily accessible, even if the TV is installed with a wall mount.

8.3 Input Lag
Show Help
What it is: Delay between input and onscreen reaction.
When it matters: Video games; when TV is used as PC monitor.
1080p @ 60Hz
Show Help
What it is: Lowest input lag possible on TV with a 1080p @ 60Hz input.
When it matters: Video games and also when TV is used as PC monitor.
Good value: < 40ms
Noticeable difference: 15ms
:
20.4 ms
1080p With Interpolation
Show Help
What it is: Lowest input lag when the motion interpolation feature is turned on.
When it matters: When you want to play video games with the Soap Opera Effect enabled.
Good value: < 40ms
Noticeable difference: 15ms
:
115.2 ms
1080p @ 60Hz Outside Game Mode
Show Help
What it is: Input lag in picture modes other than the specific game mode.
When it matters: For playing video games while retaining access to all features of the TV.
Good value: < 40ms
Noticeable difference: 15ms
:
112.7 ms
1080p @ 60Hz @ 4:4:4
Show Help
What it is: Lowest input lag possible on TV when displaying 1080p @ 60Hz @ 4:4:4
When it matters: PC monitor.
Good value: < 40ms
Noticeable difference: 15 ms
:
36.2 ms
4k @ 60Hz
Show Help
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz.
When it matters: Video games and also when TV is used as PC monitor.
Good value: < 40ms
Noticeable difference: 15 ms
:
19.8 ms
4k @ 60Hz @ 4:4:4
Show Help
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz @ 4:4:4.
When it matters: PC Monitor
Good value: < 40ms
Noticeable difference: 15 ms
:
36.6 ms
4k @ 60Hz + HDR
Show Help
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz with HDR.
When it matters: HDR Video games.
Good value: < 40ms
Noticeable difference: 15 ms
:
19.9 ms
4k @ 60Hz @ 4:4:4 + 8 bit HDR
Show Help
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz @ 4:4:4 with HDR enabled at 8 bit
When it matters: PC Monitor with an HDR capable graphic card
Good value: < 40ms
Noticeable difference: 15 ms
:
36.2 ms

Input lag is low, which is good. For best results, use the 'Game' viewing mode. With the PC icon selected for chroma subsampling support the input lag is slightly higher, but still quite good.

8.0 Supported Resolutions
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What it is: Different resolutions supported by TV.
When it matters: PC monitor usage.
Score components:
  • 20% 1080p @ 60Hz @ 4:4:4
  • 20% 1080p @ 120Hz
  • 20% 4k @ 30Hz @ 4:4:4
  • 20% 4k @ 60Hz
  • 20% 4k @ 60Hz @ 4:4:4
1080p @ 60Hz @ 4:4:4
Show Help
What it is: Crisp text on 1060p @ 60 hz signal.
When it matters: PC productivity and 60 fps gaming.
:
Yes
1080p @ 120Hz
Show Help
What it is: 120 fps 1080p signal supported.
When it matters: PC gaming.
:
No
4k @ 30Hz @ 4:4:4
Show Help
What it is: Crisp text on 4k @ 30 hz signal.
When it matters: PC productivity and gaming.
:
Yes
4k @ 60Hz
Show Help
What it is: 60 fps 4k signal supported.
When it matters: PC productivity and gaming.
:
Yes
4k @ 60Hz @ 4:4:4
Show Help
What it is: Crisp text on 4k @ 60 hz signal.
When it matters: Productivity and 60 fps gaming in 4k.
:
Yes

To enable support for higher bandwidth resolutions, activate 'HDMI UHD Color' from the picture menu. This is only possible on HDMI 1. To display chroma subsampling correctly, label the HDMI input to 'PC'.

Side Inputs
Rear Inputs

All of the inputs are located on the side of the TV.

Total Inputs
HDMI : 3
USB : 2
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 0
Component In : 1 (incl. adapter, shared)
Composite In : 1 (incl. adapter, shared)
Tuner (Cable/Ant) : 1
Ethernet : 1
DisplayPort : 0
IR In : 0
SD/SDHC : 0

Inputs Specifications
HDR10
Show Help
What it is: Standard HDR format.
When it matters: Most common format. All UHD Blu-ray discs are required to have it.
:
Yes
Dolby Vision
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What it is: Better format, due to its dynamic nature.
When it matters: Currently, only available via streaming.
:
No
5.1 Passthrough ARC Dolby Digital
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What it is: TV can receive and pass Dolby Digital 5.1 signal to receiver via HDMI ARC.
When it matters: 5.1 audio on DVDs and Blu-rays.
:
Yes
5.1 Passthrough ARC DTS
Show Help
What it is: TV can receive and pass DTS 5.1 signal to receiver via HDMI ARC.
When it matters: 5.1 audio on DVDs and Blu-rays.
:
Yes
5.1 Passthrough Optical Dolby Digital
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What it is: TV can receive and pass Dolby Digital signal to receiver via digital optical.
When it matters: 5.1 audio on DVDs and Blu-rays.
:
Yes
5.1 Passthrough Optical DTS
Show Help
What it is: TV can receive and pass DTS signal to receiver via digital optical.
When it matters: 5.1 audio on DVDs and Blu-rays.
:
Yes
HDMI 2.0 Full Bandwith : Yes (HDMI 1)
ARC : Yes (HDMI 3)
USB 3 : No
HDCP 2.2 : Yes (HDMI 1,2,3)
CEC : Yes
MHL : No
Variable Analog Audio Out : No

HDR Blu-rays play through all HDMI ports on the TV, but some 8 bit gradations can be seen when using HDMI 2 or HDMI 3.

The TV supports 5.1 passthrough for Dolby Digital and DTS, but it is necessary to select the correct audio type in the sound settings, since it doesn't change automatically.

6.4

Sound Quality

Sound quality is average for a TV. At louder volumes the frequency response deteriorates and distortion increases. A soundbar would be an improvement over the TV speakers.

Note: Sound Quality test for TVs reviewed before 2017 was performed at 75dB, 85dB, and Max SPL. Starting 2017, the target SPL levels have been changed to 70dB, 80dB, and Max dB SPL.

6.5 Frequency Response
Show Help
What it is: Sound level at different frequencies.
When it matters: For balanced sound.
Score components:
Samsung KU6600 Frequency Response Picture
Std. Dev. @ 70
Show Help
What it is: Variance of the sound level at different frequencies.
When it matters: 70 dB.
Good value: < 4 dB
Noticeable difference: 2 dB
:
3.97 dB SPL
Std. Dev. @ 80
Show Help
What it is: Variance of the sound level at different frequencies.
When it matters: 80 dB.
Good value: < 4 dB
Noticeable difference: 2 dB
:
4.07 dB SPL
Std. Dev. @ Max
Show Help
What it is: Variance of the sound level at different frequencies.
When it matters: Max volume.
Good value: < 4 dB
Noticeable difference: 2 dB
:
5.64 dB SPL
Max
Show Help
What it is: Max volume on the TV at a distance of 1 meter.
When it matters: For listening to loud audio.
Good value: > 90 dB
Noticeable difference: 2 dB
:
90.1 dB SPL
Low-end Cutoff
Show Help
What it is: How low of a frequency at which the bass starts.
When it matters: Movies; gaming.
Good value: < 50Hz
Noticeable difference: 10Hz
:
142 Hz

Average performance. Frequency response is decent at lower volumes, but pumping and compression will be present at higher volumes. Maximum loudness is pretty good at 90.1dB but low-frequency extension of 142Hz is poor, even for a TV.

6.3 Total Harmonic Distortion
Show Help
What it is: Pureness of a single frequency.
Score components:
Samsung KU6600 Total Harmonic Distortion Picture
Distortion @ 70
Show Help
What it is: Amount of distortion.
When it matters: 70 dB.
Good value: < 0.100
Noticeable difference: 0.100
:
0.033
Distortion @ 80
Show Help
What it is: Amount of distortion.
When it matters: 80 dB.
Good value: < 0.100
Noticeable difference: 0.100
:
0.018
Distortion @ Max
Show Help
What it is: Amount of distortion.
When it matters: 85 dB.
Good value: < 0.100
Noticeable difference: 0.100
:
0.132

Average harmonic distortion performance. The amount of harmonic distortion produced at 75dB and 85dB is quite decent. However, there is a significant jump in distortion at maximum volume, mostly in the Mid Range.

8.5

Smart Features

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Score components: Subjectively assigned
Samsung KU6600 Smart TV Picture
Smart OS : Tizen (2016)

The KU6600 has the newest version of Samsung Tizen smart platform. It works well and is improving in speed and stability each year. It isn't the best looking offering, but is intuitive to use and provides a wide range of apps and features. Netflix, Amazon Video, Hulu and YouTube are all available, with many more downloadable from the app store. The TV features device discovery for CEC, allowing it to easily and automatically interface with connected devices. It is also possible to play files directly from a USB.

When a new device is detected (such as when a computer is woken from sleep while plugged into an HDMI port) the TV automatically switches to this device. This may be an annoyance if you are watching other content at the time.

Apps
Samsung KU6600 Apps Picture

The app store provides access to a wide range of content, including Youtube, Netflix and Amazon Video. In general the apps work well and are smooth.

0 Ads
Show Help
What it is: Whether or not ads can be found on the TV's smart platform.
When it matters: When using the smart features.
Score components:
Ad-free
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What it is: The TV's ability to provide an ad-free experience.
When it matters: When using the smart features.
:
No
Opt-out
Show Help
What it is: Whether you can opt out of the ad services or not. A TV only passes this test if it allows you to remove them completely, not only disable the personalized advertising.
When it matters: When using the smart features.
:
No

TV Controls
Samsung KU6600 Controls Picture

The controls are located behind the right hand side of the TV. Due to their location quite far from the edge they may be a little bit more difficult to access if wall mounted.

Remote
Samsung KU6600 Remote Picture
Remote : Smart

The remote is the same as other 6 series Samsung TVs, such as the K6250 or the KU6500. It is minimal and easy to use.

In The Box
Samsung KU6600 In The Box Picture

  • Manual
  • Batteries
  • Remote
  • Component adapter
  • Composite adapter
  • Wall mount spacers

Misc
Power Consumption : 72 W
Power Consumption (Max) : 170 W
Firmware : 1142

Differences between Sizes and Variants

We tested the 55" (UN55KU6600), version FA01. This is the only size available at the moment.

If someone comes across a different type of panel or if their Samsung KU6600 doesn't correspond to our review, let us know and we will update the review.

Size Model
55" UN55KU6600

Compared to other TVs

Samsung KU6600 Group Shot Picture
Top left: Samsung KU6300 (UN55KU6300). Bottom left: Sony X700D (XBR55X700D). Middle: Samsung KU6600 (UN55KU6600). Top right: Vizio M Series 2016 (M70-D3). Bottom right: LG UH7700 (55UH7700).  Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The Samsung KU6600 has good picture quality, but competes in a price range with strong competition. For a mid-range TV it provides a good all-round experience.

Samsung KU6300
40" 43" 50" 55" 60" 65" 70"

The Samsung KU6300 is almost the same TV, with slightly different design (flat screen) and slightly better motion handling. For both TVs the picture quality degrades when viewed at an angle. They are both a good choice for a wide range of usages, and at the price point offer a lot of value. Go with whichever is cheapest.

Sony X700D
49" 55"

The Sony X700D is another versatile TV with a wide range of features. It offers better performance for those with wide seating, but is less suited to a dark room due to the low native contrast ratio. It offers much better motion handling for sports and video game fans. For those with wide seating in a bright room it's a very good choice, otherwise the Samsung KU6600 is a better option.

Vizio M Series 2016
50" 55" 60" 65" 70" 80"

The Vizio M Series 2016 is usually sold for slightly more, but provides much better picture quality in dark scenes due to the local dimming features. It also handles motion better for fast paced games or sports, and offers low input lag for video games. Unfortunately it doesn't support chroma subsampling for PC use. If you can afford it, go with the Vizio M Series 2016.

LG UH7700
55" 60" 65"

The LG UH7700 is available for a higher price, but provides much better picture quality when viewed at an angle. Unfortunately the dark room performance is limited by the low native contrast ratio. It has better motion handling and performs better in a bright room. For those who watch TV in a dark room the Samsung KU6600 is the way to go, but for a bright room get the LG UH7700 if you can afford it.

Conclusion
SEE PRICE
Amazon.com

7.4Mixed Usage
Show Help
What it is General purpose. The TV will be used for a variety of content and usages. Movies at night, TV shows during the day, video games from time to time, etc.
Score components:
Good TV for a wide range of usages. Movie performance is average. Good picture quality but no local dimming feature to improve dark scene performance. Picture degrades when viewed at an angle.
6.9Movies
Show Help
What it is Movies in the dark. The TV will be used for watching movies in a controlled environment, directly in front, in a home theater way. Mostly only high quality content, like Blu-rays, UHD Blu-rays, streaming and a little bit of HDR.
Score components:
Average for movies in a dark room. Picture quality is good, but lacks local dimming to improve dark scene performance. Those sensitive to judder may notice it when playing movies.
7.2TV Shows
Show Help
What it is TV Shows in a bright living room. The TV will be used in to watch TV shows, in a bright room during the day, from multiple viewing positions at different angles. The content watched has an average quality: cable, streaming, SD channels, etc.
Score components:
Better than average for watching TV in a bright room. Whole screen can get quite bright to overcome glare. Picture quality is good. Reflects more light than most other TVs. Low resolution content looks good. Picture degrades when viewed at an angle.
7.2Sports
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What it is Sports in a living room. The TV will be used to watch sports during the day, like football or hockey. Usually watched with a group, so from multiple viewing position.
Score components:
Better than average for watching sports. Picture quality is good when viewed from in front, but degrades at an angle. Motion blur is average, and some trail may be seen following fast moving objects. Some dirty screen effect is visible.
8.2Video Games
Show Help
What it is Video games. The TV will be used to play video games, directly in front, in a controlled light environment. Usually fast games, like online FPS, where motion blur and input lag is important.
Score components:
Great for video games. Input lag is low, which is good. Picture quality is good. Unfortunately motion blur is average, so may be an issue for very fast paced games.
7.3HDR Movies
Show Help
What it is HDR Movies and TV shows. The TV will be used to watch 4k UHD HDR content, with a wide color gamut and a high peak brightness. Either via UHD Blu-rays or HDR streaming.
Score components:
Supports a HDR10 input, but doesn't really benefit from it. Picture quality is good, but can't display a wide range of colors or get very bright.
7.9HDR Gaming
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What it is HDR Gaming. The TV will be used to play HDR video games using consoles that support it or on current generation gaming PCs. Xbox One S, PS4 Pro, GTX 10 series and AMD RX series graphics cards.
Supports a HDR10 input, with low input lag which is good. Doesn't support a wider color gamut and can't get bright highlights. Picture quality is good.
6.9PC Monitor
Show Help
What it is PC Monitor. The TV will be used as a PC monitor, from 2-3 feet away, either for productivity purposes or gaming. Sharp text is important, as well as a high resolution.
Score components:
Good PC monitor. Displays chroma subsampling correctly for clear text on all backgrounds. Input lag is low. Picture quality is good.
Questions Found an error?

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Questions & Answers

1 ANSWERED QUESTIONS
0
How does the KU6600 differ from the KU6500?
We haven't reviewed the KU6500, but have it and expect to publish a review within the next few weeks. Without a full review, they look almost identical (with a slightly different stand). The body of the TV looks the same, and the remote is identical. They both have 60Hz panels, and exactly the same menu options.
We are not taking any more questions for this product because we no longer have it in our lab.