I have a TDSS-modified ST-10 and opened it up to take a look. Every point-to-point wire inside has been wrapped in shielding and grounded. Also, the wires from the amp modules to the outputs have been replaced with some kind of ribbon cable (and shielded like everything else). My unit also had a fancy beeswax fuse installed, but I'm pretty sure that was done by the previous owner, not Bob. In any case, the impact of a power line fuse on SQ is debatable at best and the beeswax in my fuse had melted and ran out of the fuse (!), so I replaced it with a standard fuse. The power cable that came with my unit is stock.
I bought the ST-10 used and already modded, so I can't comment on the impact of these mods on the impact on sound quality, but I can say that the unit sounds amazingly good 'twixt a Schiit Freya and pair of Wilson Sabrinas.