MultiPan

MultiPan is a three band, multiband panner, where you can pan (or convert to mono) your audio's three bands (low, mid and high) separately.
You can set the low frequency (operates below that frequency) and the high frequency (operates above that frequency).
The band between these two becomes mid.
You can mute the bands and also, there is an extra gain control per band.
Besides the controls, you have a phase scope, a correlation meter and a master meter, with indicators of clipping.