Sony KDL-55HX823 review

This slim 3D LED TV is an awesome all-rounder

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Sony kdl 55hx823

Put to work with online fare from the Bravia Internet Video platform, the Sony KDL-55HX823 spits out excellent upscaled images.

Although we did notice the odd jagged edge or an overly soft picture on a number of occasions, the Smooth Gradation setting always produces a clean and highly watchable picture.

If that's a crucial part of the TV's appeal as an all-rounder, so too are the Sony KDL-55HX823's 3D pictures. During a run through of the Wimbledon men's final from a Virgin Media Tivo box recording, what was most striking was the lack of ghosting and crosstalk. Given LCD tech's somewhat chequered history with 3D, this is something of a relief, although there's still the issue of greatly reduced brightness.

The good, clean work continues with some sequences from last year's football World Cup, although the odd echo was evident in some of the more fast-moving passages of play (not when Spain were playing, then).

Those bright and breezy outdoor scenes in the African sunshine excel, even if the 3D-ness doesn't always (the only truly impressive depth shots are from behind the goal and from other odd angles), but it's a different matter with Avatar on Blu-ray.

Take the attack sequence on the tree; the gunships, fireballs and explosions are all displayed with noticeable depth and, despite the odd echo attached to flying debris, are clean and comfortable to watch. Then, as the Na'vi run from the falling tree and the smoke starts to sink, the entire film takes on a blacker look to the extent that a lot of foreground details are tricky to make out. Any areas that are dark and dingy fade into one another.

It's not enough to put us off active shutter 3D, since the detail – especially on a panel as big as this – is exceptional, and far surpasses passive 3D TVs we've seen.

All but the most muted passages are imbued with vibrant yet natural colours, and Motionflow 400Hz smoothes out pictures very effectively. So well, in fact, that we can't really see the point of the 800Hz system employed by Sony on the Cinema HX series-toppers.

These same strengths uphold an admirable 2D performance, with the exception of good, but less-than-plasma ultimate black levels, which can cause greyness in some scenes.

The LED backlight isn't as tight as it needs to be – we noticed some light leakage in all four corners of the panel, with clusters visible in the lower left-hand side.

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 HX823
3D Type3D
Brand NameSony
Screen Size139.7 cm (55")
Aspect Ratio16:9
Green CompliantYes
Green Compliance Certificate/AuthorityRoHS
Wireless LANYes
Ethernet TechnologyEthernet
Weight with Stand (Approximate)28.30 kg
Backlight TechnologyEdge LED
Operating Power Consumption188 W
Standby Power Consumption250 mW
RMS Output Power30 W
Electronic Program GuideYes
DLNA CertifiedYes
Digital Audio OutputYes
Height with Stand804 mm
Width with Stand1280 mm
Depth with Stand305 mm
Composite VideoYes
Component VideoYes
Network (RJ-45)Yes
PC StreamingYes
Internet AccessYes
Media PlayerYes
Enhanced Refresh Rate200 Hz
Height774 mm
Width1280 mm
Depth27 mm
Comb Filter3D Y/C
Sound SystemDolby Digital Plus, Dolby Pulse, Surround Sound
Product SeriesHX823
Maximum Resolution1920 x 1080
FeaturesWeb Browser, Sleep Timer, Picture in Picture, Picture and Picture (PAP), Favorite Channel Selection
ManufacturerSony Corporation
Product ModelKDL-55HX823
Product LineBRAVIA
Manufacturer Part NumberKDL55HX823BU
Manufacturer Website Address
Marketing Information

Put on a show of style and entertainment
Enjoy Full High Definition 3D on a TV that can't fail to impress. With cutting-edge Monolithic Design, an ultra-thin OptiContrast screen and a cable-free Wi-Fi connection to online entertainment, the only thing you need to worry about is what to watch.

Picture excellence in 2D and 3D
See lifelike Full HD quality in 2D and 3D. Get a smooth view of fast-action sports and movies with Motionflow XR 400. Enjoy a high contrast picture on a slim Dynamic Edge LED screen. Every pixel of your 2D or 3D picture is enhanced by our unique picture technology.

Package Contents
  • Remote Control
  • 2 x AAA Batteries
  • AC Power Cable
Limited Warranty1 Year
Weight (Approximate)23.20 kg