In changed my computer because broken.
With the previous one (mac mini I5 ) i did’nt have any problem.
With the new one (mac book pro I5 256 GB SSD 8 GB RAM High sierra). I hear continuos craclkings during listening both with tracks of my library (at the moment 4 GB pendrive) and Tidal.
Sounds to me like it might be a System Output, non Exclusive Mode, issue. Try using Built-In Output instead and under Device Setup > Playback Tab, click on Exclusive Mode.
If that doesn’t work, post a screenshot of your Signal Path.