Usage Tips: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 microphone-level balanced signal output.The product provides level signal volume adjustment control, 1/8inch (3.5mm) TRS male input and 3-pin XLR male output.A separate unit converts an audio device level signal input to a microphone grade balanced signal XLR output.Output with independent level and volume adjustment control switch3.5mm male input and XLR male outputThe product uses high-performance transformers to eliminate noiseEliminates voltage loop hum and cuts line noise in a compact metal enclosure that's perfect for touring and will bring great sound to countless gigs.Colour: BlackMaterial: MetalPackage Contents:1 * Audio Noise isolator1 * Storage bagOnly 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.