WisWinDa Upgrade Pro XLR 3Pin Single Channel Audio Isolation Box Ground Loop Isolator/Noise Filter/Hum Eliminator for Audio System Eliminate Hum&Buzzing Noise (WDISO018P-XLR-F-M) 3Pin XLR Ground Loop Isolator/Noise Filter XLR could help you to reduce the noise from the theater&home audio electric system, gives you quality sound output. Perfectly solve theater and home stereo ground loop noise problems. Build-in Quality Audio Transformers Hum/Buzz Eliminator have durable aluminum shell, sturdy and resist, which has long durability. Hot-swap Design--The Audio Isolation Transformer Alternator is easy to install. The Ground Loop Audio Noise Eliminator could work with amplifiers, speakers or mixers, with stable performance. Let you eliminate theather speakers / home stereo systems humming sound away and enjoy a perfect sound. Used for portable devices that have XLR audio outputs Home Stereo Speakers Amplifier Equalizer ect. WisWinDa Upgrade Pro XLR 3Pin Single Channel Audio Isolation Box Ground Loop Isolator/Noise Filter/Hum Eliminator for Audio System Eliminate Hum&Buzzing Noise (WDISO018P-XLR-F-M)