This versatile device allows you to blend a stereo or mono line-level monitor signal with a microphone or line-level XLR signal, all to be delivered flawlessly to your headphones. With a host of features including a monitor level control, mic/XLR level control, mic/line pass-through XLR jack, two headphone output jacks, and a stereo or mono TRS or TS 1/4" monitor input jack, the PM50se is designed to cater to a wide range of users.