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| Product | Sony KDL-55HX850 | Panasonic TC-P55ST60  | Sony XBR-55X900A |
| Price | $1,815.00 to $2,799.00 | $1,249.00 to $1,799.00 | $4,295.00 to $4,999.99 |
| CNET editors' rating | 4 stars | 5 stars | Info unavailable |
| Average user rating | 3.5 stars | 5 stars | 0 stars |
| Release date | Info unavailable | April 1, 2013 | Info unavailable |
| Bottom line | The Sony HX850 is a smart-looking Smart TV with sparkling picture quality, making it a front-runner for plasma-phobic videophiles. | The midlevel price and outstanding quality of the Panasonic TC-PST60 series make it our strongest TV recommendation ever. | Info unavailable |
| Product type | LED-LCD | Plasma | LED-LCD |
| Diagonal size | 55 in | 55 in | 55 in |
| LCD backlight technology | LED Backlight technology | Info unavailable | LED backlight technology |
| LED backlight type | Edge Light with local dimming | Info unavailable | Edge-lit with local dimming |
| 3D technology | Active 3D | Active 3D | Active 3D |
| Internet streaming services | Sony Entertainment Network and apps access | Viera Connect | Sony Entertainment Network and apps access Amazon Instant Video Hulu Plus Netflix Pandora Rhapsody Vudu YouTube Vimeo Google TV |
| Connectivity protocols | Built-in Wi-Fi | Built-in Wi-Fi | Built-in Wi-Fi Wi-Fi Direct Ethernet MHL |
| Resolution | 1920 x 1080 | 1920 x 1080 | 3840 x 2160 |
| Display format | 1080p | 1080p | 4K (2160p) |
| Image aspect ratio | 16:9 | 16:9 | 16:9 |
| Widescreen modes | Wide Zoom Full Normal Caption Auto Wide Conventional 4:3 Zoom | Info unavailable | Wide Zoom Full Normal Caption Auto Wide Panorama Conventional 4:3 Zoom |
| Comb filter | 3D digital | Info unavailable | 3D digital |
| HDCP compatible | Yes | Yes | Yes |
| Supported DTV resolutions | 1080/60p 720/60p 1080/60i 480/60p 1080/24p 480/60i | Info unavailable | 1080/30p 1080/60p 720/60p 1080/60i 480/60p 1080/24p 480/60i 2160/24p 2160/30p 2160/25p 720/30p 720/24p |
| TV tuner presence | Yes | Yes | Yes |
| Digital TV tuner | ATSC | ATSC | ATSC QAM |
| Speaker(s) | 2 x Right/left channel speaker - Built-in - 10 Watt 1 x Subwoofer - Built-in - 10 Watt | 2 x Main channel speaker - Built-in - 5 Watt 1 x Subwoofer - Built-in - 10 Watt | 2 x Speaker - Built-in - 12.5 Watt 1 x Subwoofer - Built-in - 20 Watt 1 x Speaker - Built-in - 20 Watt |
| Surround mode | Yes | Yes | Yes |
| Sound effects | S-FORCE Front Surround 3D | VR-Audio Pro Surround 2.1 | S-FORCE Front Surround 3D Sony Original Surround |
| Total output power | 30 Watt | 20 Watt | 65 Watt |
| Addtional features | OptiContrast panel with Corning Gorilla Glass Eco Drive X-Reality PRO Engine Audio Return Channel (ARC) LightSensor Technology Channel labeling Sleep timer Sound Enhancer Invisible Speaker System S-Master Digital Amplifier Game mode | My Home Screen Swipe & Share 2.0 Voice Guidance | 4K X-Reality PRO Picture Engine 4K Ultra HD Simulated 3D Auto 3D Depth Adjustment Triluminos Display Smartphone mirroring technology Opera Internet browser 24p True Cinema 5.1 Channel Audio Out Magnetic Fluid Speaker technology S-Master Intelligent MPEG Noise Reduction Deep Color LightSensor Technology Smartphone App (iOS / Android) Bravia Sync Game mode Sound Booster Sound Enhancer |
| Input/Output connections | 2 x HDMI input (19 pin HDMI Type A) - Side 2 x HDMI input (19 pin HDMI Type A) - Bottom 2 x USB 2.0 (4 pin USB Type A) - Side 1 x Component video input (RCA phono x 3) - Rear 2 x Composite video input (RCA phono) - Rear 1 x VGA input (15 pin HD D-Sub (HD-15)) - Side 1 x Audio line-in (RCA phono x 2) - Side 1 x Digital audio output (optical) (TOSLINK) - Bottom 1 x Audio line-out (Mini-phone stereo 3.5 mm) - Side 1 x Headphones (Mini-phone stereo 3.5 mm) - Side | 3 x HDMI input (19 pin HDMI Type A) - Side 2 x USB 2.0 (4 pin USB Type A) - Side 1 x Composite video / component video / audio input (RCA phono x 5) - Bottom 1 x Network (RJ-45) - Bottom 1 x Digital audio output (optical) (TOSLINK) - Side | 2 x Audio line-in - Rear 1 x Audio line-out / headphones (Mini-phone stereo 3.5 mm) - Side 1 x Composite video / component video input (RCA phono x 3) - Rear 1 x Composite video input (RCA phono) - Rear 1 x SPDIF output - Rear 1 x Network (RJ-45) 4 x HDMI input (19 pin HDMI Type A) 1 x Serial (Mini-phone stereo 3.5 mm) - Side 3 x USB 2.0 (4 pin USB Type A) |
| Video interface | HDMI Component Composite | HDMI Component Composite | HDMI Component Composite |
| HDMI ports qty | 4 | 3 | 4 |
| Manufacturer warranty | 1 year warranty | 1 year warranty | 18 months warranty |
| Dimensions (WxDxH) | 50 in x 1.4 in x 29.5 in - Without stand | 50.6 in x 13.1 in x 32.1 in - With stand | 57.6 in x 15.9 in x 30.6 in - With stand |
| Weight | 47.8 lbs | 68.3 lbs | 76.1 lbs |
| Full specifications | Full specifications | Full specifications | Full specifications |
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