Comparison between Sony KD-55XF8577 vs Grundig 55VLX7730

General Info
Model Number	Sony KD-55XF8577	Grundig 55VLX7730

Price	Check on Amazon	Check on Amazon
Type	TV	TV
Year	2018	2017
Brand	Sony	Grundig
Model Series	XF85	7730
Model Number	KD-55XF8577	55VLX7730
Alias		55 VLX 7730 SP
Display
Screen Size Class	55" (inches)	55" (inches)
Diagonal Size	54.65 in 138.8 cm 1388 mm 4.55 ft	54.65 in 138.8 cm 1388 mm 4.55 ft
Screen Width	47.63 in 121 cm 1209.75 mm 3.97 ft	47.62 in 121 cm 1209.6 mm 3.97 ft
Screen Height	26.79 in 68 cm 680.483 mm 2.23 ft	26.79 in 68 cm 680.4 mm 2.23 ft
Display Type	IPS
Display Bit Depth	10 bits	10 bits (8 bits + FRC)
Frame Rate Control	Yes	Yes
Max Number of Colors	1073741824	1073741824
Bits	30	30
Screen Aspect Ratio	16:9	16:9
Screen Resolution	3840 x 2160	3840 x 2160
Screen Pixel Pitch	0.315 mm	0.315 mm
Screen Pixel Density	81 ppi	80 ppi
Screen-to-Body Ratio	93.79 %	89.99 %
Backlight Source	Edge LED	Direct LED
DCI P3	95%
Screen Brightness	500 cd/m²
Max Screen Brightness	700 cd/m²
Static Screen Contrast	1000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag	28 ms
Display Minimum Response Time	9 ms
Display Average Response Time	13 ms
Display Maximum Response Time	32 ms
HDR	HDR10 HLG (Hybrid Log Gamma)	HDR10
3D	No	No
Size, weight, color
Case Depth	2.05 in 5.2 cm 52 mm 0.17 ft	3.09 in 7.9 cm 78.6 mm 0.26 ft
Case Weight	19.1 kg 42 lbs
Case Width with Stand	48.46 in 123.1 cm 1231 mm 4.04 ft	49.06 in 124.6 cm 1246 mm 4.09 ft
Case Height with Stand	30.55 in 77.6 cm 776 mm 2.55 ft	30.63 in 77.8 cm 778 mm 2.55 ft
Case Depth with Stand	12.4 in 31.5 cm 315 mm 1.03 ft	8.98 in 22.8 cm 228 mm 0.75 ft
Case Weight with Stand	20 kg 44 lbs
Case Color	Silver	Black
Hardware
System on Chip or SoC	MediaTek MT5891
CPU	ARM Cortex-A53
CPU Cores	4	2
CPU Frequency	1100
GPU	ARM Mali-T860 MP2
GPU Cores	2
GPU Frequency	700
RAM Memory Size	2
Internal Storage	16
TV Tuner	Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-S2 DVB-S DVB-C	Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S DVB-S2
Built-in Camera	No	No
Network	LAN Wi-Fi 802.11a (IEEE 802.11a-1999) 802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) 802.11n 5GHz 802.11ac (IEEE 802.11ac) Bluetooth Wi-Fi Direct DLNA	LAN Wi-Fi 802.11a (IEEE 802.11a-1999) 802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) 802.11n 5GHz Bluetooth Wi-Fi Direct
Connectivity	1 x Ethernet RJ45 4 x HDMI 2.0 (ARC; CEC) 1 x CI+ 1.3 1 x Satellite In (Sub; F-type female) 1 x Optical Audio Out 1 x IR Out 1 x AV Composite In (Video + L/R) 1 x Satellite In (Main; F-type female) 2 x USB 2.0 (max 0.5 A) 1 x 3.5 mm Audio Out 1 x USB 3.0 (max 0.9 A) 1 x Antenna (RF) (female)	1 x Ethernet RJ45 4 x HDMI 2.0 (ARC; CEC; MHL) 1 x SCART 1 x 3.5 mm Audio Out 1 x S/PDIF 1 x Satellite In (Main; F-type female) 2 x USB 2.0 1 x Antenna (RF) (female) 1 x USB 3.0 1 x CI+ 1.3
Audio
Audio Speakers	2 x 10W	2 x 10W
Features
OS	Android 7.0 Nougat Android 8.0 Oreo	Smart Inter@ctive TV 4.0 Plus
Cool Features	ClearAudio+ Triluminos Display Super Bit mapping 4K HDR Voice command Clear Phase Speaker Light sensor Dynamic Backlight Control Frame Dimming S-Force Front Surround sound Live Color Technology Dynamic Contrast Enhancer DSEE (Digital Sound Enhancement Engine) 4K X-Reality Pro Object-based HDR remaster HDCP (High-bandwidth Digital Content Protection) 2.2 BRAVIA Sync (HDMI-CEC) Image Processor - X1	Motion Picture Improvement Perfect Picture Plus (4.0) PVR HDCP (High-bandwidth Digital Content Protection) 2.2 Micro Dimming Engine
Ergonomics
Case Width	48.46 in 123.1 cm 1231 mm 4.04 ft	49.06 in 124.6 cm 1246 mm 4.09 ft
Case Height	28.07 in 71.3 cm 713 mm 2.34 ft	28.9 in 73.4 cm 734 mm 2.41 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	300 x 300	300 x 300
Removable VESA Stand	Yes	Yes
Height Adjustment	No	No
Landscape or Portrait Pivot Support	No	No
Left or Right Swivel Support	No	No
Forward and Backward Tilt Support	No	No
Frequency and Interpolation
Vertical Digital Frequency	120 Hz	60 Hz
Screen Interpolation Technology	Motionflow XR	Video Perfection Index
Screen Interpolation Value	1000	1300
Screen Interpolation Measurement Unit	XR	VPI
Accessories
Extras	IR extender cable
Certificates and Standards
Licenses	ENERGY STAR UL/cUL
Usage and Storage Requirements
Safe Operating Temperature Level	0 °C - 40 °C 32 °F - 104 °F
Safe Operating Humidity Level	10 % - 80 %
Internal Storage Temperature	-20 °C - 60 °C -4 °F - 140 °F
Internal Storage Humidity	5 % - 85 %

Sony KD-55XF8577

Grundig 55VLX7730