Modding the PS Audio Directstream DAC MK1 and MK2

I think your Bridge II card is flawing your listening. When we did testing, the Bridge card totally trashed the sound quality no matter what mods were done. I would not recommend using the Bridge card as one could never get the great sound these DS’s can provide. With our External Power Board one can A/B the sound difference by just turning off / on the external supply (the internal supply takes over automatically).

The panel of listeners we had could hear NO difference between the internal supply and external supply so it’s not just my opinion. This was also done with the XS4400 transformers as well as our nickel transformers.

The external supply makes no difference in our listening tests however the nickel transformers along with the Vocm mod makes a huge difference.

We had one member with the external power supply, XS4400 transformers and the Vocm mod that used it for several months.  We changed his transformers to the nickel ones and he was blown away.  He also could not hear any difference between internal supply and external power supply.

Oh, I just realized, it's not APS transformers less sensitive to power supplies. It's Vocm mod makes any transformers less sensitive to power supplies.

But, anyway, I can still hear the difference between power supplies, power cords, and interconnects. 

QUOTE:

"You could be right if you weren’t wrong. I have a dedicated streamer."

I believe you told us you are using a Bridge II board.

QUOTE:

"And as I've told it before (I think, I did on PS Audio forum), with a dedicated PSU for analog board, the Bridge card gets better power, and it doesn't spoil the sound of the DAC anymore (okay, not as much as it did before)."