The PlayStation TV has failed to sell because it’s tough to explain what it does, says Sony.

Speaking with Game Informer, Sony president of worldwide studios Shuhei Yoshida explained why the device has seen price drops of up to 60 percent in some US retailers.

"It didn't capture the consumers' imagination," said Yoshida.

"It's a hard concept to explain. You could say it's a mini-console, it's a video streaming device. If we say it's a mini-console, like other mini-consoles, people expect a better device like PS4 or Xbox One. It's short in that delivery.

“When you say it's a video streaming device, there are other devices with higher def video. It has some unique things like remote play of PS4 games. It can do many things, but it's not easy to say this one thing is extremely good. I think that's the reason we were not able to convince people at the original price."

Yoshida also said that Sony wasn’t making AAA games for the Vita anymore because consumer expectations were too high.

"The expectation of the graphical quality and size of the world for these type of games have risen after the launch of PlayStation 4,” he said.

“The same thing happened with the PSP. People were so excited to be able to play PS2 graphics games on the go. After PS3 launched, expectations grew. The types of games on PSP were not as attractive."

Although Sony Computer Entertainment president and global CEO Andrew House recently called the Vita a legacy platform, Yoshida said that it has a future with Cross-Buy games and indies.