Sound output delete EZsound

I Have a MacBook Air running the latest version of the operating system.

I Noticed the other day that my internal speakers stopped working. I checked the sound output and noted that an output called EZ sound was selected as an output rather than internal speakers.

I Have no idea where this is from but I cannot seem to uninsall it. I have checked my library/extensions folder and there is nothing that matches.

Any help apprecited

MacBook Air (13-inch Mid 2013), OS X El Capitan (10.11.2), null