Having used the UO over the years in several systems since it was introduced, I can say that it's best implemented in front of any digital component as the Balun will mitigate digital noise from being dumped back on the AC line.
Also, while the stock Power Port outlet in the UO is very good, it is bright and forward sounding and the UO is much improved with replacing the PP with an Oyaide or Furutech outlet. It is also beneficial to use a quality power cord feeding the UO.
Also, while the stock Power Port outlet in the UO is very good, it is bright and forward sounding and the UO is much improved with replacing the PP with an Oyaide or Furutech outlet. It is also beneficial to use a quality power cord feeding the UO.