Ok finished the mod today. What I did is really not for a novice I think. Have it back in the system and will report back. I found a lot to do and we will see. I took lots of pictures and will post soon.
- constrained layer damping throughout the entire case. I used two layers with copper tape sandwiched in between
- nylon bolt, washers, nuts, and a round plastic top plate
- 1/4 inch of cork under the tranny....the cork is over the layers of CLD described above
- I replaced the power cord going from the 150 to the component. The female connector end. I used a wonderful Furutech cord. The cord I replaced is shielded as is the Furutech. The shield is connected at both ends of this female side of the balanced cord. That is it is hooked up inside the unit and the female IEC plug.
- wrapped internal tranny cables with ERS cloth
I did not like all the rather flimsy Wago terminal blocks/splices used to make all the connections. They are made by Wago. They are fine, but I much prefer direct wire to wire connections. I discarded all these Wago connectors and soldered all connections directly. They were used because they are so easy to use and make for quick assembly. They will not sound as good as direct wire to wire however!