Same here with Spring 2 DAC KTE. DSD has flipped channels. Using the „mouse piano“ on the bottom of the Matrix I can supposedly swap channels but then both, PCM and DSD is wrong (at least consistent). I can use Roon‘s Procedural EQ to correct that, but overall sound quality seems to suffer if it‘s enabled.
Strange thing, since according to both manuals the „off“ position of Matrix‘ switch should have the correct signal polarity. Hopefully a firmware update will fix this (running latest versions on both).