The HEM-462 from Hosa is a two channel Hum Eliminator designed to get rid of "ground loop" problems, such as AC hum or buzz and/or pop noises.
The unit can be used to convert between balanced and un-balanced lines, in either direction. The RCA phono connectors make the HEM-462 suitable for work with desktop digital audio applications.
HEM-462 - Hum Eliminator for PC Audio Integration
One (1) Year Warranty