Modding the PS Audio Directstream DAC MK1 and MK2

Where can I learn more about the USB grounding pin and obtain one? - Thanks

I tried sending messages to both the RichardsElectronics and JK Richards accounts on 7/25, 8/17 & 8/21 and I never heard back from either one. Don't know what else to do.

We never received any PM or the likes from you. Perhaps you are going about it the wrong way?

It’s easy to reach me here.

Directstream MK1 and MK2 transformers.

I did not see the 8/22 post about the Direct Stream "Junior" model; so, my bad.

Here is a FFT plot of the MK2 with the new Massive firmware.  Note the distortion is worse than with the last firmware.  This new massive firmware is almost impossible to measure the actual noise floor.

MK2 with Massive FW:

The MK1 has better measurements. Note the better dynamic range and lower noise floor of the MK1.  Note this one has a bad transformer on the right channel.