audio-interface

Heya! I own an interface called the Discrete 4 Synergy Core (non-Pro version) by Antelope Audio. I recently upgraded my headphones (to Hifiman Ananda Stealth V3) and I'm trying to figure out whether these headphones are getting used to their full potential or whether they're not getting amped...

I am having trouble with the following issue. I hope it hasn't been discussed tooooo often here. I couldn't find anything here, that helped me. I have a Steinberg-UR22 Audio-Interface. (Is it an underground-resistance Interface???^^) I’m seeking to add a headphone-amplifier towards it...