>
> I have a Perf/X Oberheim Navigator.
>
> What is IT
>
> -m@
>

the Navigator is a MIDI re-mapper, you can set up a "table" so that
every c# becomes an F, etc ...it is particularly useful for mapping
MIDI drum patterns between different drum machines or for on-the-fly
changing the drums used on one machine

if your old synth lacked a transpose you could use it for that too