Audio Systems: MDX Audio, mobile amplifier, expection

Question
Have you ever heard of MDX Mobile Dynamic Xstream? i have an MDX amplifier and i was wondering who makes them

Answer

I have heard of Java (web-based) runtimes that are called that.
The second question is pretty vague to be able to answer:
If you are talking about an MDX mobile amplifier, I have no idea. They could be their own entity or they could be under any number of parent companies.
I am the type that would never knowingly attain an amp without knowing who made it, first. Of course, if it were given to me, that would be an expection. ;)