TCL 55DP648: Price & Where to buy
Although the 55DP648 has an RRP of £599 it’s one of those ones where it’s not really been on sale at that price. That’s an impressive price point for a large size TV with a 4K resolution and HDR support and puts it in competition with sets like the Hisense U7A and to some extent, the Philips 6703.
TCL 55DP648: Design & Features
These days you don’t need to splash out on a TV to get stylish design. We prefer the U7A from Hisense but the TCL is decent for the sub-£500 price. You get slim bezels around the display and the panel itself is very thin, too, at under 10mm. The sleek lines are only interrupted by a round power button. Like most TVs the 55DP648 is wall-mountable if you like. Alternatively, just sit it on the spiky legs. These are quite close to the sides of the TV so there’s a possible issue if you want to put the set on a small stand with the display over hanging. The remote supplied works well enough but it’s an oddly thin and long shape like a wand. There are buttons for Netflix and Freeview Play which you’ll need (just like the Bush Smart TV from Argos.)
TCL 55DP648: Setup & Interface
Setting up the TV is pretty simple and straight forward. The ports are all lined up vertically on the back and include three HDMI ports, Ethernet (there’s also Wi-Fi) and two USB 2.0 ports. We’d like more, of course, but that’s what you get with a cheaper set. What’s really odd, and frankly stupid, is that HDMI 2.0 is switched off by default so you’ll have to find it and turn it on in the menu. Leave it switched off and colours from HDR sources look awful. The Roku smart engine used for TCL TVs in the US would be nice but we’re stuck with a basic system here. Overall, the interface is easy enough to navigate all though there are some oddities like the sports mode being in the system section of the menu rather than display. It’s also fairly sluggish in use and although there’s only a button for Netflix, there are various other services available via Freeview Play such as BBC iPlayer and ITV Hub. There’s also 4K YouTube via the basic Home menu.
TCL 55DP648: Performance
A cheap set with nice design and a few good features is all well and good, but whether you should buy one really hinges on the performance of the panel itself. Let’s start with the positives,. Colour gamut is good for a TV at this price and it supports HDR10 and HLG (hybrid-log gamma). Unfortunately you will have to do some tweaking to see these colours as the default settings are for fairly muted tones. Upscaling HD content to 4K is pretty good and a quick response time means this is a good choice if you’re going to do a lot of gaming. Having the Ultra HD resolution means the image is nice and crisp. Sadly, the good news ends there. Our biggest gripe is the poor brightness. The TCL 55DP648 peaks at just under 300 nits which is not good at all for an HDR TV. It means the image looks dull and you don’t get those blinding whites that you’ll see on – admittedly more expensive – sets from Samsung’s higher ranges. Annoyingly, brightness is adjusted automatically and the image regularly dimmed for no apparent reason. We scoured the menus to find and disable any ambient light sensors, dynamic contrast settings and anything else, but either couldn’t find these things or turning them off had no effect whatsoever. Compounding this is fairly poor viewing angles; only sitting square on does the picture look its best. Oh, and there’s no Dolby Vision support. Backlighting comes from edge-mounted LEDs and we noticed a bit of light leakage from the top edge and and lighting isn’t particularly even across the panel. Darker areas of the picture lack detail and aren’t really deep black.A mysterious feature called Mix Dimming doesn’t seem to help either. Motion isn’t handled (there’s no motion processing at all) so camera pans and objects moving quickly across the screen have an amount of jerkiness that can’t go unnoticed. We’ve not mentioned audio yet which, in a word, is lacklustre.
Verdict
If you’re looking for a 4K HDR TV for under £500 then the TCL 55DP648 might appear to be a bargain. It’s got a stylish design with its thin panel which has good colour gamut and better upscaling than you’d expect at this price. It’s also got a very quick response time for all the gamers out there. However, the set’s very poor brightness was a constant source of disappointment creating a lacklustre experience across the board. It proves that you can buy a TV with HDR support that can look worse than a regular 4K set. Add in poor viewing angles and uninspiring audio and it’s hard to recommend this TV. If you can afford it, spend a little more and buy the Hisense U7A. Tech Advisor’s Reviews Editor, Chris has been reviewing all kinds of tech for over 10 years and specialises in audio. He also covers a range of topics including home entertainment, phones, laptops, tablets and more.
