Modding the PS Audio Directstream DAC MK1 and MK2

I would like to continue discussing all the mods we have created for these two DAC's as it seems PS Audio is no longer allowing discussions about them on their forum.

For reference here is a link to the closed discussion.


Wow this is too bad.  I'm trying to convince a friend with a MkII to have the transformers installed.  Maybe once I get mine back and hear them I can convince him.   

I forgot to add the MK2 with the Antero firmware.  It's also a "10"

In modded form, We feel the MK1 and Mk2 with the above firmware sound almost identical.

No one here could tell which DAC was playing.

Was browsing this AM and found this hack job.  This maybe worse than the first one posted.  At least he is not selling this for retail.


Vocm mod 🤣


Going to give the person some credit. First, they used nickel core APS transformers. Had the right idea on the Vocm mod, just the execution of not using suface mount and creating antennae. The added structural support for the capacitors is creative. Likely sounds good.