Hi,
I have one that's been modified according to the Mensa DAC by Bolder Cable with the only exception being that the internal wiring didn't change. However, there's been improvement in the area of more parts swap above the Mensa DAC.
Also, there is an external transformer power supply as well. Let me know if you're interested.
Regards,
Kenobi
Kenk168 (Audiogon) if you wanna look up my credential