3.5mm male input and XLR male output.The product provides level signal volume adjustment control.Effectively isolate ground loop noise, interference noise caused by phase differences between ultralong audio cables and different audio devices, and bring you clean and lossless audio.Safe hot plug: helps protect the transmission between audio devices, prevents them from being burned due to voltage differences or static electricity, and prevents popping noise when plugging or unplugging wires.Grounding setting: With left and right grounding switches and a universal grounding switch, interference caused by grounding problems can be avoided.The product uses highperformance to noise, Eliminates voltage loop and cuts line noise in a compact metal enclosure that's perfect for touring and will bring great sound to countless gigs.Wide application: It is widely used in laptops, MP3 players, CD players, mobile for phones, tablets) and other line level signals to convert the left channel and right channel summed microphonelevel balanced signal output.Colour:BlackMaterial:Aluminum AlloyPackage Contents:1 * Audio isolator1 * Storage bag(The color and style of the storage bag are random, no specification is accepted)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 +/ 13cm.