USB audio interface from ESI
The ESI Dr. DAC nano features a headphone amplifier, line output and optical digital output all via a single output combo connector.
![[NAMM] ESI Dr. DAC nano](https://img.audiofanzine.com/img/product/normal/9/8/98440.jpg?fm=pjpg&w=334&h=243&fit=contain&s=8e5796054b49e98fbefd0e7ab1be2de2)