Sonos is facing a backlash for encouraging customers to get rid of their old speakers when there may be nothing wrong with them.

The US speaker giant offers customers a 30% discount on new products if they follow steps to recycle their old ones.

Following these puts the device in Recycle Mode, which means it will then be permanently deactivated.

Sonos said it wanted to encourage responsible disposal of electrical equipment.

But many took to Twitter saying it would be far better to allow people to resell them.

"Sonos's 'recycle mode' intentionally bricks good devices so they can't be reused," wrote Twitter user AtomicThumbs.

He posted photos of five Sonos speakers which had been recycled through his company, Renew Computers.