This adapter allows you to use Pro Audio To Go as a digital audio recorder to record directly from your audio equipment, soundboards, and mixers using an XLR line in connector. It also provides a 3.5mm stereo (audio out/headphone) jack for audio playback to standard headphones, speakers or audio input to other devices. This adapter incorporates a -22db signal attenuator which reduces the audio signal to levels suitable for the microphone input. This adapter incorporates pasive components which provide impedance matching and DC blocking for allowing a wide variety of audio equipment to be used with the device. This adapter is the perfect solution for interfacing your new phone with your sound equipment for recording or production.