Finally. Here's the first phone I've ever wanted to buy. A nice review of it by Ars Technica:
http://arstechnica.com/gadgets/2014/04/flying-the-custom-flag-hands-on-with-the-oneplus-one-cyanogenmod-phone/
Stereo recording and tri-microphone noise cancelling technology are incorporated directly into the OnePlus One. Three microphones work together to identify, isolate and enhance your voice, while simultaneously filtering background noise. Use of the third microphone increases voice clarity by up to 80%.