Sescom IL-19-MINI 3.5mm Stereo Mini I/O Hum Eliminator
[REF]:
https://www.bhphotovideo.com/c/product/772173-REG/Sescom_IL_19_MINI_3_5mm_Stereo_Mini_I_O.html
The IL-19-MINI 3.5mm Stereo Mini I/O Hum Eliminator by Sescom is a transformer designed to minimize or eliminate ground loop hum, mode noise, and differentially induced hum produced by devices such as DSLRs, MP3 players, computers, tablets, and cell phones. These devices often produce unwanted noise and the IL-19-MINI stops it dead in its tracks by keeping bad signals out of the circuit and providing proven line-level isolation. The transformer also protects against hum and interference from external sources such as power supplies, motors, and generators.