The DBX 223XL is a professional signal processor. It is a small scale processor but feels like a fully professional version in all aspects. It has a number of features that give it this professional outlook and feel. First of all, it has the basic XLR balanced ins and outs. One can easily switch from stereo 2 way to mono and vice-versa and the touch of a button. It has a 10X range on both channels. There are also several other great feature. With these many features however, one will definitely require an instruction manual to make it easier. Simply click here to download the DBX 223XL manual.