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High Quality Ground isolator, compact design, for preventing signal interference and hum loops which may occur, e.g. when connecting PC sound cards or laptops to an amplifier.
There are many little helpers available for studio, stage and home stereo systems. The FGA-30 is a special transformer for unbalanced stereo line signals which is an easy-to-use aid of compact size for the protection against ground loops. And, does it work™ Of course, it does. This device prevents any hum noise previously heard when using a standard cable with stereo RCA connectors or with mini connectors for computers or MP3 players."