Audio-Technica AT-EDU25 Education PackAudio Technica AT EDU25. Featuring an AT2005USB cardioid dynamic USB XLR microphone and a pair of ATH M20x professional monitor headphones, the AT EDU25 pack gives you the tools to communicate effectively when working or learning from home. The mic's cardioid polar pattern keeps the focus on your voice, reducing pickup of sounds from the sides and rear. It provides high quality analog to digital conversion for excellent fidelity, and comes with two