Cause: The ROCKSTER is connected to a different circuit than the rest of the system.
the rest of the system.
ConnectRockster and source device/preamplifier to
the same circuit.
Cause: The hum is caused by mains interference.
Solution: Connect all devices via a mains filter.
Cause: The hum is caused by multiple sockets.
Solution: Use another multiple sockets or connect Rockster directly to the wall socket.