The Bass Enhancer found in the EDIROL MA-7ABK Stereo Monitors lets the user hear bass frequencies not normally audible through speakers this size. The Bass Enhancer is a DSP chip programmed using psychoacoustic principles that converts low frequencies into a series of overtones which the human ear cannot distinguish from the original low frequencies. This allows the listener to perceive bass frequencies outside of the normal range of the speaker cone, without over-driving the woofer. With the Bass Enhancer, the MA-7ABK Stereo Monitors offer a strong low-end in a very compact set of reference monitors.