Product description:Professional 3.5mm interface stereo signal is converted to microphone balanced signal XLR interface, the product is equipped with an earthing switch to eliminate current humming noise. The product converts level signal from lines of audio equipment, such as laptop, MP3 player, CD players, mobile phones, and tablets, to a microphone balanced mixed signal output of left and right channels. The product has a regulatory function of volume control of level signal, 1/8 (3.5mm) TRS male input and 3-pin XLR male output. Product parameters:Independent unit converts audio device level signal input to microphone balanced signal XLR outputOutput with independent level volume regulatory control switch3.5mm male input and XLR male output, line length: 150MThe product adopts a high-performance transformer to eliminate voltage loop noise and reduce line noiseCompact metal case, which is suitable for performing tour, bringing wonderful sound for your numerous performancesNet weight: 0.23kgGross weight with packaging: 0.33kgProduct size: length 102mm X width 35mm X height 29mmPackaging size: length 185mm X width 135mm X height 65mm Kit list:1 X Professional stereo signal converted to microphone balanced signal output