Got this to mix MP3 with an instrument to a headphone out for practice purposes. Works very well for that. Also has a mic input. This can also be used for creating a personal mix onstage so that you can use IEMs without having to plead the sound guy to tweak your mix.
For practice purposes, it would be very nice to have a power switch instead of having to unplug the adapter jack when not in use.
The use of jumpers instead of standard switches for options such as mono/stereo or lift/ground is quite annoying too.
Having said that, the unit does what it needs to at a good price point and is very solidly built.
Rolls Pm351 Personal Monitor System
Personal monitor for headphone practice or IEM mixing for gigs.