I have recently bought a seven-year old M-Audio Keystation Pro 88, and noticed that when I plug it into my MacBook Air, I get static noise when I press keys.
Once pressed, the same key makes a cracking sound and then works fine. But static noise may reappear later on the same key or when I play chords.
Have anyone had a similar problem? Is it due to hardware and cords or the controller needs a clean up?
Any suggestions are welcomed.
PS: I'm asking this question here according to the Help Center that allows asking questions about "usage of specific music software or hardware".