Thanks, I did turn it off. I can safely confirm there’s no issue with USB.
I’ve also been testing the other coaxial input with a CD and can also confirm there’s an issue with this input too which means we can at times hear audio artifacts. This confirms either there’s in fact an issue with both coaxial inputs on the Pontus 2 DAC or/and these inputs have not been fully tested by Denafrips.
Next step, I’ll try if I can use any of the other digital inputs i.e. OPT, I2S.
To be honest I am a little disappointed this is happening on this high end DAC, I’ll try a few more things before I return it.
Hello Pontus II owners. Just wanted to close this post by saying the main issue of the audio artefacts I experienced is due to a faulty DSP board. This was replaced by Vinshine Audio recently and I am currently re-burning it in for 100 hours. What’s interesting is the DSP board seems to be upgraded. The FPGA module is the same, with slight component tune for better output performance.
So what have we learnt from this? Well to be honest, I am one of the unlucky ones with a faulty hardware… why it happened? Guess we’ll never know.