1. 6.35 1/4" TRS Ground Loop Isolator/Noise Filter 6.35 1/4" TRS could help you to reduce the noise from the car&home audio electric system, gives you HiFi quality sound output. Perfectly solve car and home stereo noise problems. 2. Hum/Buzz Eliminator have high quality aluminum shell, sturdy and resist, which has long durability. 3. Plug&Play Design--The Audio Isolation Transformer Alternator is easy to install, don’t need any complicated tools, and it can be used after correct connecting 6.35 1/4" TRS. Kind remind please confirm whether the product is suitable before buying. 4. HiFi Performance--The Ground Loop Audio Noise Eliminator could work with amplifiers, speakers or mixers, with stable performance, high precision and good reliability. Let you eliminate car speakers / home stereo systems humming sound away and enjoy a perfect sound. 5. Wide Application-- Audio Noise Isolator Filter for Eliminating ground loop noise between the audio source and radio. Used for portable devices that have 6.35 1/4" TRS audio outputs Home Stereo Speakers Amplifier Equalizer ect. WisWinDa groud loop noise isolator is a portable design and “plug&play” device. < br >The sound source and the input terminal of the isolator form a loop separately, and the output terminal of the isolator and the load also form a loop. There is no physical electrical connection between the front and rear audio equipment, thereby ensuring electrical isolation and achieving the following purpose: < br >1. Purify the audio signal transmission, utilising the unbalanced signal transmission mode, which could be sure that the signal will not have interference noise caused by the length of the cable; < br >2. Eliminate the interference noise caused by out-of-phase power supply; < br >3. Eliminate the interference noise generated by the ground potential difference; < br >4. Unplugging and plugging signal cables in accidents or emergencies will not cause sparks due to voltage differences, which protects the safety of the front and rear equipment; the power line is divided into A, B, C three-phase and the neutral line L. The general equipment is a single-phase power supply with a working voltage of 110-220V, using L, N, G (safety ground) three-wire safety sockets. In actual working situation, the distance between the sound source and the power amplifier and the simultaneous interpretation host is very far in many cases, and there will be different power supply situations: cross-phase lines, and different safety grounds (G). < br >Because the power supply is not on the same phase line, there will be problems in such a power consumption system: at least, there will be a loud current sound from the speaker while it’s working, and at worst, there will be sparks when the signal cable is plugged in.