I tried the Noctua 12v-fan yesterday, and it did not work. I have ordered the correct 5v-version now "Noctua NF-A4x20 5V Premium 40mm".

I also installed new cards in my BSS BLU-160. I now have an all-digital unit, with 8 channels digital input and 8 channels digital output + blu-link digital output.

I will use my BSS BLU-BOB2 as DAC for now, connected via blu-link. But maybe I will buy something more fancy DAC-wise later this year.