Why does the headset audio sound strange on my T301?

The reason for this may be the audio headset you are using.

The T301 does not work well with headsets featuring a TRRS jack (3 black bands). Please be sure that you only use headsets featuring a TRS connector (2 black bands) with the T301 for optimum music listening.

The left connector is not recommended. The right is recommended.

If music playback continues to sound strange when using a audio headset with a TRS connector, contact technical support for assistance.