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| Product | Samsung LN40D550 | Panasonic TC-P55ST60  | Sharp Aquos Quattron LC-70LE732U | Samsung PN43E450 |
| Price | $777.78 | $1,229.00 to $1,799.00 | $1,595.00 to $2,864.32 | $479.00 |
| CNET editors' rating | 3 stars | 5 stars | 3.5 stars | 3.5 stars |
| Average user rating | 3 stars | 5 stars | 3.5 stars | 2.5 stars |
| Release date | March 1, 2011 | April 1, 2013 | July 27, 2011 | Info unavailable |
| Bottom line | The Samsung LND550's mix of features, style and picture quality stands tall among the tough entry-level LCD TV crowd. | The midlevel price and outstanding quality of the Panasonic TC-PST60 series make it our strongest TV recommendation ever. | For people craving a colossal flat-screen TV who don't want a plasma or a
projector, the 70-inch Sharp LC-70LE73U series LED-based LCD offers very good picture quality, especially in bright rooms. | The Samsung E450 series plasma may not be perfect, but you won't find another TV that performs this well for this low a price. |
| Product type | LCD | Plasma | LED-LCD | Plasma |
| Diagonal size | 40 in | 55 in | 70 in | 43 in |
| Technology | TFT active matrix | Info unavailable | LED-LCD | Plasma (PDP) |
| Resolution | 1920 x 1080 | 1920 x 1080 | 1920 x 1080 | 1024 x 768 |
| Display format | 1080p | 1080p | 1080p | 720p |
| HDCP compatible | Yes | Yes | Yes | Info unavailable |
| TV tuner presence | Yes | Yes | Yes | Yes |
| Speaker(s) | 2 x Right/left channel speaker - Built-in - 10 Watt | 2 x Main channel speaker - Built-in - 5 Watt 1 x Subwoofer - Built-in - 10 Watt | 2 x Right/left channel speaker - Built-in - 10 Watt | 2 x Right/left channel speaker - Built-in - 10 Watt |
| Sound output mode | Stereo | Info unavailable | Stereo | Stereo |
| Surround mode | Yes | Yes | Info unavailable | Yes |
| Sound effects | SRS TheaterSound | VR-Audio Pro Surround 2.1 | Info unavailable | SRS TheaterSound |
| Total output power | 20 Watt | 20 Watt | 20 Watt | 20 Watt |
| Addtional features | On-screen menu AllShare ConnectShare Movie Touch of Color (ToC) | My Home Screen Swipe & Share 2.0 Voice Guidance | Quattron Quad Pixel Technology AQUOS Advantage X-GEN panel AQUOS LINK UltraBrilliant LED System Vyper Drive Digital Still Picture Display Quad Pixel Plus | Wide Color Enhancer Plus ConnectShare Movie Slim frame design Auto volume leveler Down Firing + Full Range speaker Eco Sensor Game mode Auto channel search SRS TheaterSound |
| Input/Output connections | 1 x Audio line-in (Mini-phone stereo 3.5 mm) 4 x HDMI (19 pin HDMI Type A) 2 x Audio line-in (RCA phono x 2) 1 x VGA input (15 pin HD D-Sub (HD-15)) 2 x Component video input (RCA phono x 3) 2 x USB 2.0 (4 pin USB Type A) | 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 | 4 x HDMI input (19 pin HDMI Type A) 1 x HD component input (RCA phono x 3) 1 x Composite video input (RCA phono) Audio line-in (RCA phono x 2) 1 x Serial 1 x VGA input (15 pin HD D-Sub (HD-15)) 1 x Network (RJ-45) USB (4 pin USB Type A) | 2 x HDMI input (19 pin HDMI Type A) 1 x Component video input 1 x Composite video input 1 x Digital audio output (optical) (TOSLINK) 1 x USB 2.0 (4 pin USB Type A) |
| Video interface | HDMI Component | HDMI Component Composite | HDMI Component Composite | HDMI Component Composite |
| HDMI ports qty | 4 | 3 | 4 | 2 |
| Manufacturer warranty | 1 year warranty | 1 year warranty | 1 year warranty | 1 year warranty |
| Dimensions (WxDxH) | 39.1 in x 3.2 in x 24.1 in - Without stand | 50.6 in x 13.1 in x 32.1 in - With stand | 63.4 in x 14.2 in x 39.8 in - With stand | 39.8 in x 2.2 in x 24.5 in - Without stand |
| Weight | 31.3 lbs | 68.3 lbs | 121.3 lbs | 31.3 lbs |
| Digital TV tuner | Info unavailable | ATSC | ATSC QAM | ATSC QAM |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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