Audiovox media bridge AKA dice mediabridge. These are horrible devices.
I've bought from DICE twice (a dice silver line back in 2008,wasn't good. Then I was stupid and made a mistake of buying a mb1500 for my m3 in 2009).
Both had similar issues. Sound quality has serious issues with clicking popping, slow interface, freezing, etc...
on top of that DICE's support is a big fat ZERO.
They never respond to their support tickets...will never purchase anything from them again...