The DS-SP24 gives the user access to a powerful array of Xover, PEQ, Delay, Limiter, Gain, and Polarity controls to help maximize your loudspeaker system. Up to 24 presets can be saved. The DS-SP24 can be configured to have any input go to any out. This provides great versatility, giving many choices such as stereo 2-way, 1x3 with sub , 1x4, etc.