The Raspberry Pi on its own does not support audio input, these USB audio adapters are useful for providing just that. It comes with two 3.5mm audio jacks Audio Input and Output.
They have been tested to be working just fine on Raspbian Wheezy and Jessie, have a look at the tutorial guide from Adafruit below for more information
|10||10%||Up to 15.75 AED|
|50||15%||Up to 118.13 AED|
|100||20%||Up to 315.00 AED|