Bottom line: Which one is better?
When we compare Samsung KS8000 Vs KS9000 in this review, Samsung KS8000 is better because it has a finer quality sound and more user-friendly functions in terms of smart TV technology.
Stand; the two TVs have stands.
Wall mount; the two TVs can be mounted on wall.
Borders; KS8000 has 0.28” (0.7cm) whereas KS9000 has 0.39” (1.0cm)
Native contrast; KS8000 has 6906:1 while KS9000 has 6820:1
Local dimming; each TV has local dimming.
SDR real scene peak brightness; KS8000 has 489cd/m2 whereas KS9000 has 511cd/m2
HDR real scene peak brightness; KS8000 has 453cd/m2 whereas KS9000 has 471cd/m2
Gray uniformity; KS8000 has 7.5 while KS9000 has 7.8
50% std. Dev; KS8000 has 3.536% whereas KS9000 has 3.194%
50% DSE; KS8000 has 0.165% while KS9000 has 0.159%
Viewing angle; KS8000 has 4.7, the same as KS9000.
Black uniformity; KS8000 has 9.9 while KS9000 has 9.4
Native std. Dev; KS8000 has 0.432% while KS9000 has 0.541%.
Reflections; KS8000 has 9.5, the same as KS9000.
Screen finish; each TV has glossy.
Pre-calibration; KS8000 has 8.9 while KS9000 has 9.1
White balance dE; KS8000 has 1.46 while KS9000 1.04
Color dE; KS8000 has 1.64 whereas KS9000 1.50
Gamma; KS8000 has 2.15 whereas KS9000 has 2.23
Post calibration; KS8000 has 9.8 whereas KS9000 has 9.7
White balance dE; KS8000 has 0.30 whereas KS9000 has 0.55
Color dE; KS8000 has 0.21 while KS9000 has 0.30
Gamma; KS8000 has 2.20 while KS9000 has 2.21
Response time; KS8000 has 7.8 whereas KS9000 has 8.1
Flicker-free; KS8000 has 4.8 whereas KS9000 has 2.8
Black Frame Insertion (BFI); KS8000 has optional BFI
Motion interpolation; the two TVs have the same motion interpolation at 30fps and 60fps.
Native refresh rate; each TV has 120Hz.
Input lag; KS8000 has 9.0 whereas KS9000 has 9.1
1080p @ 60 Hz; KS8000 has 20.9ms whereas KS9000 has 20.5ms
1080p @ 60 Hz outside Game mode; KS8000 has 113.5ms while KS9000 has 124.1ms.
Supported resolutions; the two TVs have the same supported resolutions
Total inputs; KS8000 and KS9000 have 4 HDMI, 1 digital optical audio out, 1 tuner (cable/Ant) and 1 Ethernet. KS8000 has 3 USB while KS9000 has 2.
Inputs specifications; each TV has HDR10, HDMI 2.0 Full bandwidth, CEC and HDCP 2.2.
Audio pass-through; each TV has ARC Dolby Digital and DTS.
Frequency response; KS8000 has 6.9 while KS9000 has 7.2
Low-frequency extension; KS8000 has 84.76Hz while KS9000 has 71.27Hz
Std. Dev @ max; KS8000 has 6.49dB while KS9000 has 5.37dB
Distortion; KS8000 has 7.5 while KS9000 has 7.1
Weighted THD @ Max; KS8000 has 0.165 whereas KS9000 has 0.353
In terms of smart features, when we compare KS8000 Vs KS900 we note the following;
Smart OS; the two TVs operate on Tizen (2016) platform
Ad-free; the two TVs are ad-free
Apps and features; the two TVs have preinstalled apps and features
TV controls; KS8000 and KS9000 have TV controls.
KS8000 is a better TV when we compare KS9000 Vs KS8000 because it has user-friendly functions in terms of smart TV technology and has a finer quality sound.$