Rolls PM351 Personal Monitor StationThe Rolls PM351 is a mixer designed to make the lives of studio and stage musicians a little easier, specifically by allowing musicians to monitor and control their own levels. If you're a drummer who needs to monitor a click track on stage, or a guitarist who needs to turn down the vocals in the mix, this device is suitable for you. Input jacks are provided for instruments, line level sources, and microphones. By means of three independent volume