That day I get the Sennheiser HD219 which it is said that it can be used on MP3, Ipod, Ipad, Iphone CD. I try to use it with the Nexus tablet, though no sound comes through the headphones. Is this comes from the 'jack' is not appropriate? From the moment it was possible to use on the iPad, I thought it could also be used on any shelf. Can anyone help me? Thank you in advance.