I currently have this setup: Wiim Mini-SMSL DO100-Hypex Ncore 250. If I replace the Mini with the Ultra, will I still need the SMSL or just use the DAC of the Ultra? Wonder if the Ultra DAC is good enough comparing to the DO100. I also have a SVS SB-1000 Pro which is now connected to the SMSL. In case I keep the DO100, how will I connect the sub? to the Do100 or the Wiim Ultra?