My own observation is that people’s sensitivities to clocking vary widely. Some consider the differences night-and-day significant, to the point where we have a number of customers using Vivaldi clocks with Rossini and Bartók DACs, while others say they can’t even hear them. I myself am somewhere in between.
I recently demonstrated the Lina and Bartók APEX DACs at the Stockholm High End Show and as part of the demonstration turned the Lina clock on-and-off several times to show the difference it made. I did this presentation six times over the course of two days to audiences of about 20-30 each time. Each time I asked the audience what they thought, the vast majority said they heard a clear difference.
Of course with packed rooms I realize there was a certain amount of peer group pressure on folks to say they heard difference (or at least to keep quiet of they didn’t!) but what interested me was that the people who said they heard a clear difference described what they heard in terms that rhymed well with my own impressions.
All I would say is if you don’t hear a difference don’t panic! And please continue to enjoy your Rossini APEX - it’s a great DAC!