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Notes:This product is a single price,The product is one, and the picture is only taken front and backProfessional Mono Common Ground Audio Black Audio Isolator Filtering To Eliminate Current Sound Balancing AdapterFrequently asked questions:[Professional buzz eliminator] - Effectively isolate the ground loop noise, eliminate the interference noise caused by the phase difference between the ultra-long audio cable and different audio equipment, and bring you clean and lossless audio.[Safe Hot Swap] - Helps protect transmission between audio devices, preventing them from being burned out due to voltage differences or static electricity, as well as preventing blasting noise when inserting or pulling wires[Grounding Settings] - With left and right independent grounding switch and universal grounding switch, can avoid buzzing interference caused by grounding problems.[Wide range of applications] - This professional ground ring isolator is suitable for almost any electronic device where you need to eliminate noise. Such as sound systems, subwoofers, karaoke speakers, mixers, guitars, keyboards, etc.Note: This XLR cable is suitable for all dynamic microphones. However, when using capacitive microphones, phantom power is required. In addition, this cable does not support games such as Xbox.Aluminum alloy housing size 9011042mm 450g net weightProduct introduction:Audio noise isolator Audio current sound eliminatorTechnical parameterProduct model :HTA001QIsolated cattle Model: imported Permalloy material PXSW99162 Input interface :6.35&XLR1Input impedance :600Ω(AC impedance)Output interface :XLRx1 stereoOutput impedance :600Q(AC impedance)Ground isolation switch: with ground switchFrequency response :20HZ-20KHZ(+Insulation resistance :DC1000V 100Q Isolation voltage :AC50HZ-60Hz 0V-1500VDimensions 1109042mmProblem descriptionThere is noise when the notebook is connected to the mixer when using the external power supply, and there is no noise when the power is unplugged and only the built-in battery is used.When the computer is connected to the mixer, there will be noise at a distance, but there will be no noise at close distance, and so on.The computer connects VGA video and audio to the home projector at the same time, the noise occurs, the VGA cable is unplugged, and there is no noise.The computer is connected to the mixer, the battery is normal, and there is a noise when connected to the power adapter.Computer connected to the mixer, the two are close to normal, far away from the noise, the replacement of the audio cable has been improved, the use of audio separator-separator, completely solved!Color: BlackMaterial: plasticPackage Contents:1 x Audio IsolatorNotes:Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.