the el7 fatso is a modern digitally controlled analog device that offers many of the "musical non-linearities" exhibited by the older tube, class a discrete, and magnetic tape mediums. this two channel audio processor will musically integrate frequencies and transients and increase the apparant volume without actual increase in peak levels. in addition, two channels of famous empirical labs compression are provided. there are several compressor "types" with fixed attacks and releases new model , out of the box only once . bought two months ago .