This lack of colour subtlety probably plays a part, too, in the fact that the Kogan’s HD pictures don’t look especially sharp. They look cleaner and more detailed than standard def, but there’s not that ‘sparkle’ of extra resolution that we see with a really excellent HD TV.
Wrapping up the bad - or at least, average - news are the KULED551HDAA’s input lag and audio performances. Where input lag is concerned, we measured around 55ms - a high enough figure to marginally impact your gaming skills that’s probably not helped by the undefeatable 100Hz system. As for audio, while the set sounds OK when handling very straightforward ‘chat’ type audio, it becomes very thin and even a little painful on your ears when the going gets tough.
To be fair, while the Kogan’s problems prevent it from being a TV we can recommend even given its affordable price tag, it isn’t a total dead loss. Its black level response isn’t too bad, for instance, in that apart from the little patches of non-uniform extra brightness mentioned earlier, you can get a colour that looks more like black than the sort of milky grey commonly found with budget TVs.
You can actually still get a decent amount of brightness and dynamism out of the picture too, even after pushing down the brightness setting to counter the backlight consistency issues. And colours while not particularly natural or subtle are at least punchy, leaping off the screen in a way many budget screens can’t match.
Motion blur is sufficiently minimal, meanwhile, that we wish we could have seen how the TV’s motion fared without the detestable 100Hz system in play, for we suspect that it would have turned out quite respectable.
Kogan can certainly claim to have made an eye-catching start to its latest UK TV campaign simply by selling its 55in flagship TV for under £750. However, a couple of careless mistakes together with a generally very average performance mean that we’re yet to be convinced that it has what it takes to mix it up with the more established names.
That’s not to say we don’t want to see them keep trying, though.