My DAC+ is occasionally making a faint clicking noise during playback. I can't find any pattern to it, other than that it tends to be in places where volume is decreasing (e.g. a fade-out, or a quick pause). I can not, however, reproduce the noise simply by replaying the same section of music.
I can best describe the sound as the faint "click" or "tick" that one might hear when muting or un-muting.
Are there any known issues of which I should be aware, or any suggestions on how to further diagnose (or hopefully just fix) the issue?