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.
https://forum.psaudio.com/t/modding-the-directstream-dac-mki/2680
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emailistsThanks for your honest review of your MK2 upgrade. Enjoy! gme109The signature series is not just the Rev2 transformers it's a complete system. As these DAC's get better and better sounding, the improvements get narrower however it is an improvement. We are continually seeking ways to improve these DAC's One way to improve them even further is to use a DDC like the Hermes or a Matrix to feed the i2s signal. The USB interface in the Mk1 is one of the weakest parts of this DAC.
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We are very excited about our new Signature Series Modded MK1 DAC. Before the new mod the DC offset averages between 3.6mv and as high as 12mv. No unit we ever received here was below 3.6mv. Most were about 7mv or more. With our new DC offset tuning we get it down to 0.5mv or lower. Low frequency distortion is now much lower and the sound quality has increased quite a bit. We should start receiving reviews soon. We could not stop listening to ours last night. They are back in stock now.
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