This is a reference open back headphones from AKG. If you're looking into this, chances are you know what you are getting into. These don't have sound isolation because these are open back cans. They are wired. They are having a long non-detachable cable. They can be used with onboard audio but a dedicated dac/amp is recommended. The sound signature is very neutral. Like these would be great for studio monitoring. Also, for critical listening these would he fine too. I use it with ifi Zen Dac...