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.

https://forum.psaudio.com/t/modding-the-directstream-dac-mki/2680

gme109
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How does one contact jk richards. Is there a website? Email? Tel. number? I would like to look into the PSA DSD Mk I mods. Not yet motivated to buy Mk II. Neal

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Placed the newly upgraded PS Audio DSD MKI DAC into my system at around 6 pm yesterday evening after the system had been unplugged for two weeks and was pleasantly surprised how good the music flowing from it sounded. Normally my system remains turned on and in standby at all times, but even then, it takes at least 30 minutes to an hour of playing music before the sound really starts to gel to the point where I get lost in the music. Yesterday I was held captive immediately and remained affixed in my listening chair for 4 hours straight as I went through my music collection as if hearing these silver discs for the first time. The PS Audio MKI DAC was no slouch to start with, and I thoroughly enjoyed listening to music through it, but it's an entirely new and more refined DAC now. 

The top end is more detailed while also sounding smoother and more delicate.  Cymbals have more shimmer and sparkle, and their presence lingers longer as the sound decays into a blacker background.  The midrange and vocals sound absolutely stunning and to die for!  Again the lower noise floor reveals subtle inflections in the vocals that were previously obscured, further suspending  my disbelief.

The bass now digs deeper and is more controlled and articulate. The foundation of the music has more drive and bass lines are easy to follow now. I also noticed I don't need to listen as loud in order to get the bass to come alive and really boogie. Before when listening at lower levels the bass never really had the presence and punch it did when turned up louder. Now even at much lower levels everything including the bass sounds prefectly balanced.

I can say without hesitation, this is the best bang for the buck upgrade I've ever made.

It's come to my attention that JK Richards has started a thread here on Audiogon himself, so any further discussion will take place here: https://forum.audiogon.com/discussions/modding-the-ps-audio-directstream-dac-mk1-and-mk2#2553976

 

Hello jkrichards,

I have a PSA DSD Mk I. I am interested in your upgrades. How can I contact you? Neal

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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: