open-eared

adjective3

1. •
   Listening closely to something; attentive.

   • Companies should be open-eared to feedback from their customers.
2. •
   Being receptive or open-minded to new styles of music.

   • Many people tend to listen to what they know, but others are more open-eared.
3. •
   Synonym of open-back (“partially covering the ear”).

   • Not sure if Rat shack has any more decent headphones (you might find some old Pro-25's that they might still have in stock if you're lucky) but those are open eared. — 2001