Having amplifiers, speakers and audio players or mixers in place is already a large part of the sum for a good listening experience for your audience. To make it great though, you might consider adding one ore more audio processing tools that will allow you to tweak and adjust the sound that works best for the respective venue. DAP Audio provides Analog Processing tools like cross-overs, stereo converters or audio splitters, as well as Digital Processing tools as cross-overs and speaker management systems. Also other useful Audio Tools like dB meters are available.