The little plastic casing on one earpiece is popped off, and replaced with a 3D-printed version that stoutly holds a female TRS jack in place.

The little plastic casing on one earpiece is popped off, and replaced with a 3D-printed version that stoutly holds a female TRS jack in place.

Looking for the best Headphone Jack Adapters? Check out our comprehensive guide with the 10 best options available.

Bi-directional Audio Transmission: 3.5 mm balanced female plug is compatible with TRS/TRRS jack, in addition, the headphone with CTIA or OMTP jack is available.