I don't normally mod others gear...it can get expensive, but can tell you what to do.

If you can wield a soldering Iron and have a few basic tools...

I have a "How to Mod the A5" write up  with refference to the following A6, A7 varients,also 7se,8se.   This is writen by me, it will get you to close the performance of the aaa5. I don't go down the same route as les, but there are some similarities. I pay more attention to the disapation of vibration from within [and without] to that end I designed a vibration absorbing base for the unit.  Obviously the signal areas are covered using my ic's.  A lot of the ideas in the generic mods article [on this forum] can be applied to the A5 so take a look !