Hello Terry,

I'm currently using an Edirol SD-90 here at work as my external sound card/midi mapper. I choose the SD-90 over the 80 based on the type of connectors used. The 90 uses RCA plug-ins which is more compatible with what I do here at work. The 80 uses 1/4 inch plugs, plus it comes with rack mounts. I do believe the sound engines are the same though.

Their web site has some great demos so use the link above that Donny provided.

You can email me with any specific questions if you'd like.

mike