Situation is, I had activated upsampling and played with various settings. Eventually, deactivated again. Since it was deactivated it keeps falling back to or remember the latest upsampling value that was set. Which was ‘2x,4x’.
Especially with Qobuz, it keeps using the 2x upsampling anytime I change an album or something. I can’t track down 100%, cause sometimes it seems sticking to the effect until I could get it right.
Actually, in Audirvana I don’t see the change on the setting. It shows ‘deactivated’. I can track the change in the monitor or service application of the sound device that is the Terratec DMX 6Fire. Affected seems to be the “Digital Play” channel in the mixer. At least, I tend to use that mostly. Output would always be “Output 1/2”.