Abstract: Apparatus for flashing incandescent and fluorescent lamps in response to audio signals such as speech or music, together or individually. Apparatus employs an automatic level control to insure uniform input level to each active filter which filters the audio information by selected components into certain preferred bands of frequencies. The outputs of these active filters are thus rectified and fed into integrators. These integrators are recycled 120 times per second by transistors across the integrating capacitor. The output of the integrators are fed into transistor comparators where individual comparators compare the input signal with a reference signal and changes state also at 120 cycles per second. The outputs of the comparators are fed into triac drivers which drive the control gates of the triacs at 60 cycles per second, thus turning the load lamps on and off at such a rate eliminates any discernabale lag in light display to audio beat sounds.