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    NS-55D420NA18
    A 55-inch LCD (LED) HD TV with an LED backlight from Insignia, with 1080p resolution, and a 60-hertz refresh rate, three HDMI inputs, no component-video inputs, and one USB port. This TV is not internet enabled.
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    * This Model May Have Limited Distribution

    Description
    A 55-inch LCD (LED) HD TV with an LED backlight from Insignia, with 1080p resolution, and a 60-hertz refresh rate, three HDMI inputs, no component-video inputs, and one USB port. This TV is not internet enabled.
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    We investigate, research and test so you can choose with confidence.

    Become a member to compare products & get access to ratings.

    We investigate, research and test so you can choose with confidence.

    Become a member to compare products & get access to ratings.

    We investigate, research and test so you can choose with confidence.

    CR Expert Take

    How did it perform in our owner surveys and expert lab testing?

    Overall Score

    The Overall Score for this model incorporates our expert lab test results, as well as ratings for that brand’s reliability and owner satisfaction from our annual product owner survey of members.
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    Current Range of Tested TVs
    What goes into the Overall Score?

    OWNER SURVEYS

    Learn More
    Predicted Reliability
     /  5
    Owner Satisfaction
     /  5
    HD picture quality
     /  5
    UHD picture quality
     /  5
    HDR
     /  5
    Viewing angle
     /  5
    Motion blur
     /  5
    Sound quality
     /  5
    Versatility
     /  5
    Data privacy
     /  5
    Data security
     /  5
    Ultra HD Picture Quality
     /  5
    Ultra HD performance
     /  5
    Color
     /  5
    Screen size (in.)
     /  5
    TV resolution type
     /  5
    Display type (Backlight)
     /  5
    Internet-enabled
     /  5
    Energy cost/yr. ($)
     /  5

    Detailed Test Results

    HD PICTURE QUALITY. HD picture quality was only decent. It did a very good job displaying the fine detail of HD content. Color accuracy was very good, with image content, and flesh tones in particular, looking natural, though color temperature was moderately on the cool side, with images tending toward a bluer tone. Contrast--the difference between the darkest blacks and brightest whites--was good, so images had depth and dimension, typical of most models we test. The brightness level was good, making it a suitable choice for most rooms. Black level was generally good, though not as dark as better performers on the darkest scenes (though quality does degrade as you move to the sides - see viewing angle). This TV includes a "dynamic contrast" control that we would normally turn off because it tends to blow out highlights in darker scenes. Unfortunately the feature defaults back to "ON" whenever we cycle the TV's power, an issue we hope gets resolved with a firmware update. In scenes with subtly shaded light-to-dark areas, such as a sky during sunset, the model did a very good job producing a smooth transition without distinct, coarse bands. There was slight display non-uniformity that created brighter cloudy areas most noticeable on very dark scenes (or in the black bars of a letterboxed movie). We routinely see this issue with LCDs and severity can vary from model to model. Film mode operation for HD film-based content was excellent, with no visible jaggies along the edges of objects during motion scenes. Deinterlacing was very good, with minimal jaggies visible when converting 1080i video content, such as from cable, to the display's native resolution.

    VIEWING ANGLE. This Insignia has a narrow viewing angle overall, below-average performance among TVs for this attribute. Only those seated directly in front of the screen will see the best picture quality. When we viewed the TV from the sides image quality degraded significantly. The picture showed a moderate loss of color, so flesh tones looked a bit washed out, along with a moderate color shift. Black levels visibly brightened, reducing contrast especially on dark scenes. When viewing the image from above or below eye level to the screen, the vertical viewing angle was good. The picture showed some change in color, contrast, and black level.

    MOTION BLUR. This Insignia TV has good motion performance, with some blurring on our motion tests. This is better than average for LCD displays with the basic 60Hz frame rate. This model does not include a blur reduction feature.

    SCREEN REFLECTIVITY. Though not as mirror-like as on some models, this screen surface is glossy and therefore susceptible to reflections from a nearby lamp or window. It does a good job reducing glare from ambient light and maintains contrast in a brighter room environment.

    SOUND QUALITY. This model has good sound quality; about average among the models we've tested. When watching a movie blockbuster, a concert, or TV show, it delivers decent performance but falls short of the better performers. Bass was lacking in depth and definition, but treble was nicely detailed, while the overall sound was a bit thin and closed in. The speakers produced a good volume range so this model should play sufficiently loud in typical room environments and without obvious distortion. Most people would find this sound quality acceptable.

    EASE OF USE. On first power up there is an on-screen guide that helps you through setting up the TV. Insignia includes a traditional IR, button keypad remote for control of basic functions. The high contrast labels on the buttons make them easier to read in a dimmer viewing environment.

    INTERNET FEATURES. This TV does not have access to the Internet.

    CONNECTIONS. This model has three HDMI inputs-- one supports ARC (Audio Return Channel), one composite input, and no component input one USB port, an optical digital audio out, a headphone out. The cable connections on the rear panel are recessed with side or bottom-facing ports, so wires don't protrude beyond the display's depth.

    INCLUDED IN THE BOX. A quick start guide. A remote control with batteries. No printed manual is included.

    ABOUT ULTRA HD TESTING: We test UHD picture quality using 4K movies, videos, photos, and test patterns to confirm these displays deliver performance to this format's full potential. We check the TV's ability to reproduce 4K image detail, as well as high dynamic range (HDR) for TVs that support this capability. Image quality is tested using a 4K movie player connected to the TV's HDMI input, as well as from files stored on flash drive plugged into the TV's USB port. We also check the quality of 4K streaming from Netflix or YouTube (if the service is supported by the TV), and how well the TV can upscale HD movies to the display's higher UHD resolution while keeping artifacts such as "jaggies" along the edges of image content to a minimum. The best UHD TVs, and HDTVs, present high fidelity images that reveal the full quality of the best source content without degradation.


    About

    The Insignia NS-55D420NA18 is a 55-inch LCD (LED) HD TV with a native resolution of 1920x1080 (1080p).

    This TV has three HDMI inputs, and no component-video inputs. It also has one USB port, which may be used to play media--photos, videos, and music--stored on a flash drive.

    The Insignia NS-55D420NA18 measures 31.5 inches high by 49.2 inches wide by 11 inches deep, including its base. The panel itself is 3.6 inches thick including any protrusions, and the screen has a glossy finish.

    The warranty on this model covers parts for 12 months and labor for 12 months.

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