Can't the seller tell you what amp to get?
Was this one of those eBay sellers?
Contact Dynavin
info@dynavin.com
They are being sued by Google for pirating the Android OS on their latest units. They
have payed no royalties to anybody. They make a nice looking product, but it is a
case of buyer beware.
Is it like this unit here?
DYNAVIN 7" HD Mercedes E Class w211 2002-2008 | eBay
If so with all the custom shops in the LA area a good stereo shop can
change the head unit and the amp in less than 90 minutes for under $500 including
the amp.