Sony's UBP-X700. Physically, it's a fairly plain-looking ... DVDs as long as the player is connected to an HDTV or 4K UHD TV using an HDMI connection. Some Blu-ray players also offer 4K upscaling ...

The best 4K Blu-ray players deliver the ultimate picture ... now – you'll notice all our top picks are from Panasonic and Sony, apart from the more niche options – but there are models across ...