Very nice Schiit Magnius balanced headphone amp/preamp. No scuff or scratches and in 100% working order.
The amp has both balanced and single-ended headphone out, and pre-amp inputs/outputs. Selectable single-ended vs balanced, so it can switch two inputs, and there is a low and high gain switch.
This is probably the least expensive way to drive a balanced pair of phones and is still made in the U.S.A. Technical review here:
https://www.audiosciencereview.com/forum/index.php?threads/schiit-magnius-balanced-headphone-amp-review.15252/
Includes the amp and external wall wart AC/AC power supply.