Mar 27, 2019

Hissing in  Massdrop x Koss ESP/95X

I've been getting an intermittent hissing in these headphones which persists for a few seconds even after I turn them off, and have seen this on my original as well as the RMA unit I received. I run them out of USB from my PC through an SMSL Sanskrit 6, and didn't have this problem when I ran my speakers through them. Does anyone know if this could be an issues with my setup?

It's the Koss electrostatic system. Keyword, system. If I remember right, that audio source is specifically developed to pair with the headphones.