XXHighEnd

Here's something curious. I've analysed the outputs of the iFi DAC when being fed in three different ways:

1. XXHighEnd using KS (in Unattended)
2. HQPlayer using ASIO
3. microRendu using RAAT

The file was fed to the DAC with no DSP in the player (no upsampling, filtering, noise-shaping, etc). I've also included the noise spectra when there's nothing playing, for both the audio PC (XX and HQP) and the microRendu (RoonReady).

Have a look at the three attached spectra. So what's causing the noise between 23-60kHz during playback... XX having the highest? (These noise profiles are identical on all the respective 24/captures - it's not a quirk.)

Mani

Here are some plots when using my 'tricked-out' audio PC with the iFi DAC in the fairly insulated (electrically, mechanically and acoustically) room in my basement (as opposed to the more run-of-the-mill audio PC in my office that the earlier plots were taken with). No issues here in all three cases! (Totally different track.)

Mani.

Why ?

Different days, different locations, different PCs. And I can't keep listening to the same track over and over  :wacko2:

Mani.

Mani, I understand that.
Bbbbut the usefulness of showing graphs for comparison (with the first set) while from a different track (or different part of it), is a tiny bit beyond me. :)

And Yes, I think it can matter. But we only know when both sets are the same to begin with.

Peter

The noise happens on one PC (consistently, irrespective of track) and not the other (consistently, irrespective of track). If I had only shown the first set, it would have been much harder to identify this as a possible hardware issue (but only with XX). I think this is very useful information, no?

Mani.

Yep. All clear.

Maybe I'll split this subject from the original ...

Peter

So I did.

Mani,

The Rendu also shows higher noise in your office situation; it looks like you know that ?

Regards,
Peter