Home › Forums › Products › Rackmount › Eventide DSP 4000 – earlier model? › Reply To: Eventide DSP 4000 – earlier model? June 6, 2008 at 1:30 pm #117546 IDeangelis Hi Kim if my memory is correct your unit should have 20 bit converters while your friend's is an 18 bit version. They both sound the same. best I