JK Richards PS Audio DSD MKI transformer upgrade

I sent my PS Audio DSD MKI to JK Richards to be fitted with the upgraded nickel transformers and VOCM caps. Should be arriving today. Will follow up with a comparison review  once the upgraded DAC settles in. 

Here is a link to the lengthy thread covering the evolution of the PS Audio DSD mods.


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Today a PS Audio technical service technician posted an advisory regarding modified DSD Mk II DACs (latest iteration).  Apparently they have had more than a few of these modified units come i for repair. The nature of the repair was an output transformer swap.  PS Audio is not saying what transformers were installed, who did the install, or if the installation was sub par.  These units are failing all PS Audio bench tests and the repair is a replacement bard with the original style transformers installed.  As the affected units have been modified the repair is not covered buy warranty.  A link to the thread provided in the PS Audio Forum is provided for reference: 


Here is the real reason the new MK2 is failing.  It is filled with flaws and QC is awful.  From the flawed grounding tabs to screws crossed threaded and many never tightened. Loose power transformers and many adapter boards hand soldered makes for many failure points.  We have install many audio transformers, none of which has failed or caused any issues.  We did our last MK2 transformer swap yesterday and found ALL digital board standoffs and power transformer bolt completely loose.  It's a wonder it didn't fall apart.

It's so bad we stopped offering transformers for the MK2.  Our Signature Series modified MK1 sounds better than the MK2 and we are focusing our efforts on them instead.

Here are just a few examples of what we have been finding.