This is an odd one. Using Vivaldi DAC/Upsampler/Clock fed by Roon (local USB files), EtherREGEN switch, pair of Shunyata Omega cables. DAC feeds Spectral pre to Spectral mono blocks to Wilson Alexia 2 speakers. Recently playing music I will notice a “tizzy” high frequency sound from say a string section. That got my attention! For example at about 5 minutes into the 1st movement of Beethoven’s 4th symphony, Thielemann conducting.
Thought to look into Roon server (Nucleus) as the possible culprit. Checked it and replayed but same symptoms.
On the assumption that if it were only noticed for such a narrow frequency band, maybe it had to do with this 48k 24bit conversion. So, I powered off/on the Upsampler. When I replayed the track it returned to “normal”. Not only was the apparent tizzy sound gone but the overall playback was smoother/quieter/musical.
Any idea how restarting the Upsampler may have “fixed” things? Are there means available to take snapshots of the system (Upsampler)? Maybe trap/trace? What I should have noted at the time was anything that was out of the ordinary shown on the Upsampler’s display.