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.


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.

Must have been a difficult decision coming to the conclusion of no longer offering APS transformers for the MKII. A real loss for the MK2 community. Hopefully, when PS Audio gets its production issues sorted, you may consider revisiting the decision. 

Spent a day revisiting the Snowmass 3.0.5 firmware in my Vocm APS xformer modded MK1. In my system, in my acoustic environment, and my ears I prefer Sunlight. Just my experience, YMMV.  

"This job is way better then you did for some poor lad."


I did not mention your name here however Since you just told on yourself...

You assumed we did this for a customer. We did not.

You seem to assume a lot I see as Ted Smith has called you out several times for not knowing what you are talking about and wrongly assuming circuits and design. This is going to get you in trouble for sure not including defamation and libel.

You did this mess not long ago after we installed your transformers.

That old photo you posted shows our 1st test of concept of the Vocm mod done at the very start of this type of mod. We had these caps on hand to test in my personal unit.

After we proved it worked quite well we moved forward to do it correctly with the SMD caps.

This is how we do it.