So after talking with Technic (the master of audio), it appears that there are three (or more) versions of the AMP.
One of them looks totally different and is like the one I have in my 08.
The second one I know of is the pics posted by the OP. It has a 20 pin connector (which has power and ground in it) and a MOST connector for the fiber optics.
The third one I know of (which is the newest one) also has 20 pins and a MOST connector, but has an additional 2 Pin Connector for Power/Ground.
All three are M individual audio enhanced premium sound amps.
Lots of changes! Good luck OP to getting the situation fixed.