un55ju6400 reviews

Curved No

Dimensions of 55" TV stand: 22" x 9".

Borders 0.63" (1.6 cm)

Max Thickness 1.85" (4.7 cm)

Native Contrast 706 : 1

Contrast is really poor on the 55" UN55JU6400, and blacks will often appear gray. Those flaws won't be too apparent in a well-lit room. Other sizes of the JU6400 doesn't have this problem.

Local Dimming No

Backlight Direct

SDR Peak 2% Window 271 cd/m²

SDR Peak 50% Window 271 cd/m²

50% Std. Dev. 4.062%

50% DSE 0.184%

Uniformity isn't great, with horizontal and vertical banding that can be seen. The corners are also a lot darker. Those problems could be apparent on playing fields of uniform color.

LCD Type IPS (only 55")

màu sắc Shift 29°

Brightness 44°

Black Level 75°

Native Std. Dev. 2.572%

There is a lot of cloudiness on Black screens, and bright flashlighting is present on the right side.

White Balance dE 5.21

màu sắc dE 3.2422

Gamma 2.25

White Balance dE 0.62

màu sắc dE 0.2986

Gamma 2.2

Lower resolutions nội dung lượt thích DVDs or SD channels will look better with 'Digital Clean View' mix đồ sộ 'high.'

Cable TV or other 720p nội dung looks good.

As with most of Samsung's UHD TVs, 1080p looks great.

4k nội dung look sharp and is displayed without any issues.

Wide màu sắc Gamut No

DCI P3 xy 79.01%

DCI P3 uv 84.82%

Rec 2020 xy 56.47%

Rec 2020 uv 64.79%

Reflection 1.8%

Screen Finish Semi-gloss

The semi-gloss finish doesn't reflect a lot of light, and there is no rainbow around bright objects.
The TV can get bright enough for most environments.

Type LED

Refresh Rate 60 Hz

Response Time 6.8 ms

Overshoot 1.7 ms

This is the Samsung TV with the least amount of blur we've seen this year. There is a little bit of overshoot (see the trail đồ sộ the left of our moving logo), but movement is pretty clear overall.

PWM Dimming Frequency 120 Hz

BFI Yes

BFI Frequency 60 Hz

BFI In trò chơi Mode No

Judder-free 24p No

Judder-free 24p via 60p No

Judder-free 24p via 60i No

Judder in movies isn't too noticeable, but this TV cannot eliminate it without the use of the soap opera effect ('Auto Motion Plus').

Motion Interpolation (30 fps) Yes

Motion Interpolation (60 fps) No

1080p @ 60Hz 26.4 ms

1080p With Interpolation 110.7 ms

1080p @ 60Hz Outside trò chơi Mode 119 ms

1080p @ 60Hz @ 4:4:4 34.9 ms

The very low input lag is among the best you can find when you mix the TV đồ sộ game mode. In PC mode, the input lag is still good, at 34.9 ms.

Resolution 4k

1080p @ 60Hz @ 4:4:4 Yes

1080p @ 120Hz No

4k @ 30Hz @ 4:4:4 Yes

4k @ 60Hz Yes

4k @ 60Hz @ 4:4:4 No

Unlike other 4k Samsung TVs, the JU6400 doesn't bởi 4k @ 60Hz @ 4:4:4 (there is no 'UHD Color' option). To get Chroma 4:4:4 in the other modes, label the input as 'PC'.

HDMI 3

USB 2

Digital Optical Audio Out 1

Analog Audio Out 3.5mm 1

Analog Audio Out RCA 0

Component In 1 (shared)

Composite In 1 (shared)

Tuner (Cable/Ant) 1

Ethernet 1

DisplayPort 0

IR In 0

SD/SDHC 0

HDR10 No

Dolby Vision No

5.1 Passthrough ARC Dolby Digital Yes

5.1 Passthrough ARC DTS Yes

5.1 Passthrough Optical Dolby Digital Yes

5.1 Passthrough Optical DTS Yes

HDMI 2.0 Full Bandwidth No

ARC Yes (HDMI 3)

USB 3 Yes (1)

HDCP 2.2 Yes

CEC Yes

MHL Yes (HDMI 2)

Variable Analog Audio Out No

Std. Dev. @ 70 5.47 dB SPL

Std. Dev. @ 80 5.29 dB SPL

Std. Dev. @ Max 7.1 dB SPL

Max 91.2 dB SPL

Low-end Cutoff 134 Hz

Poor frequency response especially at higher volumes where pumping and compression may be present. The TV does get relatively loud, but the extension is poor.

Distortion @ 70 0.009

Distortion @ 80 0.01

Distortion @ Max 0.053

Very good distortion results. There is a noticeable increase under maximum load, but remains with-in the limits.

Remote Basic

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Power Consumption 75 W

Power Consumption (Max) 165 W

Firmware 1422