This magnetic headphone amp puts a DAC (and display) on the back of your iPhone

Fosi Audio announced the MD3 MagDac, a magnetic headphone amp and DAC that attaches to the back of an iPhone.

It includes a 1.28-inch LCD, 3.5 mm and 4.4 mm outputs, and charges over USB-C.

The device also works with other USB-C devices like MacBook and iPad.

Fosi plans to launch the MD3 MagDac on May 25 for about $150.