Sony Bravia KDL-55NX813 (KDL55NX813) review

Sony adds a slick, 3D ready TV to its chic NX line

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Sony bravia kdl 55nx813

Sony's new OptiContrast panel has a clear surface layer that reduces reflectivity and also helps this achieve its claimed contrast ratio of 33,000:1. The screen is noticeably less glossy than previous Sony sets so there are less distracting reflections of yourself sitting on the sofa. The main advantage though is the improvement in contrast that goes with that.

The black levels are deep and solid and the whites are particularly bright with the help of the LED backlight. The contrast level in between is strong enough to ensure detail remains visible even during the dark scenes. Using Coraline on 3D Blu-ray in 2D mode to begin with provides a good test of this as most of the film is set at night. While some TVs struggle to resolve the black figures against a black background, the image here is almost always distinct.

Switch into 3D mode and it's a slightly different story. There's a significant drop in brightness when viewing though the 3D glasses, which makes it trickier to decipher the very dark scenes. Having said that, the brightness hit occurs in all 3D TVs due to the flicker of the glasses and it's actually less pronounced here.

The other advantage this set has in terms of 3D playback is a rapid frequency response that prevents the dreaded crosstalk from ruining the effect. This is when echoes of the left and right images linger and overlap slightly to create a shadow and shatter the image. There are traces of crosstalk here, but that's all.

There's also a perceived drop in resolution when you don the glasses, too. The alternating left and right images leave you seeing a slightly softer version of the image even though each eye is actually seeing a 1080p image. Again, it's a feature of frame sequential 3D, and this set is no more prone to it than any other.

In fact, what you see here is a fairly convincing 3D image that stretches well back behind the screen, while objects in the foreground loom plausibly into the room. The bold colours, crisp detail and speedy processing all conspire to paint a particularly lifelike 3D picture.

This set can also convert 2D into 3D with the push of a button - if you really want to. This mode adds some ,impression of depth, but it's not very realistic and of course, introduces all the negative aspects of 3D, like the drop in brightness and sharpness, so really it's a sure way to ruin a good film.

Switching from Blu-ray to the TV's own Freeview HD tuner is a refreshing surprise. LCD panels of this size are usually very unforgiving of compressed standard-def material, but Sony's Bravia Engine 3 processing is clearly doing a decent job of tidying up the image in terms of clarity, contrast and colour fidelity.

What you won't see here is any dreadful artificial sharpening of the image. All too often, TV manufacturers use video processing to attempt to make images appear smoother and less grainy and end up with glitchy and artificial results. Motionflow 200Hz Pro is the latest version of Sony's frame creation processor that uses backlight blinking to deliver four times the number of frames as a 50Hz set and a stable, non-jerky image. This it manages to do without creating a halo around fast moving objects. The important point is that you don't notice it and the picture always looks natural.

Tech Specs

Product TypeLED-LCD TV
Scan Format1080p
Standard Refresh Rate50 Hz
Digital TunerDVB-C (MPEG4), DVB-T (MPEG4)
Video Signal StandardHDTV 1080p
Number of HDMI Ports4
Number of SCART Interfaces1
Product FamilyBRAVIA NX813
3D Type3D Ready
Brand NameSony
Screen Size139.7 cm (55")
Aspect Ratio16:9
Wireless LANYes
Analog TunerNTSC, PAL, SECAM
Weight with Stand (Approximate)32.20 kg
Backlight TechnologyEdge LED
VESA Mount Standard300 x 300
Operating Power Consumption180 W
Standby Power Consumption200 mW
RMS Output Power26 W
Electronic Program GuideYes
DLNA CertifiedYes
Digital Audio OutputYes
Height with Stand800 mm
Width with Stand1276 mm
Depth with Stand323 mm
Composite VideoYes
Component VideoYes
PC StreamingYes
Internet AccessYes
Media PlayerYes
Enhanced Refresh Rate200 Hz
Height770 mm
Width1276 mm
Depth32 mm
Comb Filter3D Y/C
Sound SystemDolby Digital Plus, Surround Sound
Product SeriesNX813
Maximum Resolution1920 x 1080
FeaturesSleep Timer, Picture and Picture (PAP), Picture in Picture, Auto Program, Favorite Channel Selection, Channel Labeling
ManufacturerSony Corporation
Product ModelKDL-55NX813
Product LineBRAVIA
Manufacturer Part NumberKDL55NX813U
Manufacturer Website Address
Marketing Information

Marrying impressive technology to stunning looks, this BRAVIA TV redefines your living room experience. Discover immersive 3D pictures and seamless connectivity to a world of online entertainment, all in one beautifully design object.

Package Contents
  • AC Cable
  • Operating Instructions
  • Table-Top Stand
  • Remote Commander
Limited Warranty5 Year
Weight (Approximate)26.90 kg