I have a Mytek Brooklyn and I use it with a V281 and HEX phones. I heard that an external Linear PSU does some good things for this DAC. Michal, the Mytek founder approves of this kind of upgrade. I've narrowed my choice to an HDPLEX 100W Linear Power Supply. I like the fact that it has numerous connectivity options if I want to use it elsewhere. There is a 400W Supply available, but that is an overkill for what I need. Has anyone gone down this path and can share their results?