Comparison between Hisense H55A6550 vs Hisense H55U8B

General Info
Model Number	Hisense H55A6550	Hisense H55U8B

Price	Check on Amazon	Check on Amazon
Type	TV	TV
Year	2018	2019
Brand	Hisense	Hisense
Model Series	A6550	U8B
Model Number	H55A6550	H55U8B
Alias	H55A6570
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	47.62 in 121 cm 1209.6 mm 3.97 ft	47.62 in 121 cm 1209.6 mm 3.97 ft
Screen Height	26.79 in 68 cm 680.4 mm 2.23 ft	26.79 in 68 cm 680.4 mm 2.23 ft
Display Type	VA	VA
Display Bit Depth	10 bits (8 bits + FRC)	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	80 ppi	80 ppi
Screen-to-Body Ratio	93.12 %
Backlight Source	Direct LED	Edge LED
Rec.2020		74
Screen Brightness		450 cd/m²
Static Screen Contrast		4000 : 1
Screen Horizontal Viewing Angle	176 °	178 °
Screen Vertical Viewing Angle	176 °	178 °
Screen Input Lag	50 ms	50 ms
HDR	HDR10 HLG (Hybrid Log Gamma)	HDR10 HLG (Hybrid Log Gamma) Dolby Vision HDR10+
3D	No	No
Size, weight, color
Case Depth	2.6 in 6.6 cm 66 mm 0.22 ft
Case Weight	16.3 kg 36 lbs	18.6 kg 41 lbs
Case Width with Stand	48.46 in 123.1 cm 1231 mm 4.04 ft	48.43 in 123 cm 1230 mm 4.04 ft
Case Height with Stand	30.04 in 76.3 cm 763 mm 2.5 ft	30.67 in 77.9 cm 779 mm 2.56 ft
Case Depth with Stand	9.61 in 24.4 cm 244 mm 0.8 ft	11.65 in 29.6 cm 296 mm 0.97 ft
Case Weight with Stand	19.8 kg 44 lbs	20.6 kg 45 lbs
Case Color	Black, Silver	Gray
Hardware
System on Chip or SoC	MediaTek MT5658	MStar MSD6886
CPU Cores	4	4
TV Tuner	Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S2 DVB-S DVB-T2 HD	Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S2 DVB-S
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) 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 802.11ac (IEEE 802.11ac) Bluetooth
Connectivity	1 x Ethernet RJ45 1 x HDMI 1.4 1 x Satellite In (Main; F-type female) 1 x S/PDIF 1 x AV Composite In (Video + L/R) 2 x HDMI 2.0 (ARC; CEC) 1 x USB 2.0 (max 0.5 A) 1 x Antenna (RF) (female) 1 x USB 3.0 (max 1 A) 1 x CI+ 1.3	4 x HDMI 2.0 (ARC; CEC) 1 x Satellite In (Main; F-type female) 1 x S/PDIF 1 x CI+ 1.4 1 x Antenna (RF) (female) 1 x AV Composite In (Video + L/R) 2 x USB 2.0 (max 0.5 A) 1 x Ethernet RJ45
Audio
Audio Speakers	2 x 10W	2 x 10W
Features
OS	VIDAA U2.5	VIDAA U3.0
Cool Features	HDCP (High-bandwidth Digital Content Protection) 2.2 Noise Reduction PVR Super Contrast Super Motion Precision Color 4K Upscaling Depth Enhancer	HDCP (High-bandwidth Digital Content Protection) 2.2 Hi-View Engine Plus PVR Ultra Motion Ultra Color Local Dimming 4K Upscaling Wide Color Gamut Backlight Scanning
Ergonomics
Case Width	48.46 in 123.1 cm 1231 mm 4.04 ft
Case Height	28.27 in 71.8 cm 718 mm 2.36 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	400 x 200	400 x 200
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	60 Hz	120 Hz
Screen Interpolation Technology	Picture Criteria Index	Picture Criteria Index
Screen Interpolation Value	1800	2800
Screen Interpolation Measurement Unit	PCI	PCI
Accessories
Extras	Remote control - EN3Y39H	Remote control - ERF6A62
Certificates and Standards
Licenses	RoHS WEEE	RoHS WEEE
Usage and Storage Requirements
Safe Operating Temperature Level	5 °C - 35 °C 41 °F - 95 °F	5 °C - 35 °C 41 °F - 95 °F
Safe Operating Humidity Level	20 % - 80 %	20 % - 80 %

Hisense H55A6550

Hisense H55U8B