I found a list of CD portables that have optical (digital) outputs (though I haven’t checked out the list myself).
People often ask about this, so I hope this helps:
http://www.minidiscussion.com/opt.html
Keep 'em flying!
I think this is a list of CD players that have optical out, to go with the optical in on minidisc players. Thanks though, this is a useful list too. 
I know of no portable MDs with optical out, but there is a home deck with it, Sony MXD-D400. It would be a useful feature but the fears of music piracy liability have more or less kept it under wraps, I believe.
You are right. I am a ninny in a hurry. It was on the minidisc discussion thingie, and I just assumed …
Hey, no worries. Actually it’s a good find - those players listed will let you copy your best Irish music CDs onto Minidisc with no quality loss. I’ll be bookmarking it myself.
If you edit your original post you can change the title to reflect that it’s for CD players with dig out.