Rumours of Sony's PS4 virtual reality headset have been running rife since last year, but now an inside source has told TechRadar that they've spent some time with the helmet behind closed doors - and it's almost ready to be revealed. Our confidential tipster said that they were impressed with the quality of Sony's Oculus Rift competitor. "The quality and resolution are really, really good," they said. "People will definitely be impressed with what Sony's built". They also told us that they understand Sony plans to announce the headset at GDC 2014, which kicks off in San Francisco on March 17.