Karel,
The MPC should not make any noise. Try it in an outlet all its own and see if it goes away while playing music. If not, it needs to be replaced and I would call Synergistic right away for a replacement.
The MPC should not make any noise. Try it in an outlet all its own and see if it goes away while playing music. If not, it needs to be replaced and I would call Synergistic right away for a replacement.