Hi Alec
I also asked Phil Leader specfik ablout the "sub" output on the back of the K7. I asked if the sub output ment that the K7 included some kind of active or passiv low pass filter. But as I understood him it have the same functionality ad with the HDSX6 where you can assign certain tracks to the obtional outputs. He also told me that the people from KeySoftservice had been involved in devoloping the SD drive functionality.
Max