The Prommer was an EPROM chip burner designed for use with the DMX and DX series drum machines, but could also burn EPROM chips for other devices of the era. Users could sample their own sounds and add effects, like reversing samples, ring modulation, and basic envelope functionality. The end result was a custom 8-bit monophonic sample that could be triggered by the early digital drum machines of the day. The device was impressive for its time, adding a level of sample manipulation that is now widespread among DAWs.