The SX3040 is a signal processor that gives audio signals more detail, contour, and presence. It does this by the use of six controls divided into two sections; one section for BASS and the other section for the SONIC EXCITER. Both sections allow you to control the frequency that is affected, as well how much of that affected frequency you would like to have blended with the direct signal. This device is similar to the EX3200, however it is a more updated version of this style of sound processors.