Sonic Studio 300 Series - Page 21

Page 21
If you connect an energized power source to the Series 300 2.1mm power connector, you may
see a small spark when you make the connection. This is due to surge current and is normal.
While this will not damage the Series 300 in any way, to avoid the spark just connect the power
connector to your Series 300 before connecting the power supply to the wall or mains power.