Origaudio Universal Rock-it 3.0 Portable Vibration Speaker with Rechargeable Battery 3.5mm - White
I would consider the rock-it 3.0 more of a novelty item to use for fun. One thing I do not like is how the wire for the surface contact is wound into the device itself. This can cause for the wire to become kinked or the pressure needed to unwind or wind the wire can cause it to break.<br /><br />I wouldn't recommend it's usage over actual speakers.<br /><br />The concept is actually brilliant - to use vibrations on surfaces to amplify sound.<br />Imagine the rock-it on a bigger scale with a larger surface 