Rolls MX41B Passive MixerThe Rolls MX41b is a utility mixer designed to expand the input capability of a constrained physical device. With this mixer, you can route up to four stereo inputs into one stereo output. On one side of the mix, you'll find 1 4" phone and 3. 5mm mini inputs with 100 kOhm level fader controls. The rear features a stereo 1 4" TRS output, as well as a stereo 3. 5mm output. If need be, you can reverse the operation: You can route the output of one stereo