Well, after reading all the nice responses about the MajikBuss and UberBuss, put in an order for (2) MajikBuss rev.B/SubBuss.
Can't wait 
As I think Dave will instruct, be prepared for a long break in period. In my system, an Uber allows for finer (micro) detail to be unsubmerged and the sensation of wider dynamics. This is most observable in my system on vinyl. On disc some nasties accompany that. But, I have a very old DAC with a very revealing dig cable. Playing records, however, continues to be fabulous. Instruments separate out in space like nobody's business.