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

128x128richardselectronics

fuses, very expensive fuses!!!!  

couldn't resist... please carry on... :)

I forgot about the shorting plugs, was going to purchase some to be shipped back with my DAC. Can anyone comment on the improvements they bring to the DAC? 

I think you may be able to order the i2s shorting plug for the i2s input #2 which is supposedly the noisier one from Jeff, or post a WTB on the Marketplace at PSAudio and somebody should have one. I guess you can make them also if you know what you are doing.

I have one and also a USB shorting plug. I use the i2s input #1 from a Matrix USB converter which is fed by Lumin U1 mini streamer.

All I can tell you is the noise floor is lower overall with all of the mods which is always a good thing.

It is a cliche, but the music comes out of a black background and sounds live on good recordings. 

I should note I also kind of lucked out and there was a used analog power board module on the PSAudio forum I picked up and installed. Ordered a decent external Chinese LPS to use with it and that also was a nice incremental upgrade for minimal cost.

Really pleased with this DAC.

 

Good thing we can continue the discussion here : )

 

I have a long weekend ahead and hope to share some photos of the internal power supply with changes for the supply of the digital part

 

@Jeff: Do you know when the next batch of APS trafos is ready for shipment? Cant wait