gofar99 Messages: 2004 Registered: May 2010 Location: Southern Arizona
Illuminati (5th Degree)
Hi, There are a number of possible advantages. Lots of time the power from the PC or laptop is full of junk. Using and external power source can provide clean power and improve the sound. Also you can get more power from an external power source than is available from the computer. The computer is usually limited to providing 500ma max. External sources I have seen can do as much as 2 amps.