I bought my head unit a couple of years ago brand new from Best Buy and it didn't come with a remote. My niece has one for her Pioneer unit and I love it, so much so that I'd like to pick one up for mine. There are a bunch of different Alpine remotes but I've yet to find any specifying they work for my head unit.
I assumed since mine didn't come with one that none would work but I'm not sure.
usually any remote that was that years remote they had should work. I had an older alpine a few years back and my remote worked on my friends who had the previous year. I tried looking on alpine's site for a part # for a remote but it didnt even find anything for your cd player. I would give them a call and see if they can get you a part # for one and then hit up ebay.
EBAY!!!!
Burn some dust-Eat my rubber!!!!
^I got one of those in the original box it came in
Upon further research, I found out the CDE-9845 is not remote ready, meaning no remote works with it.
I even tried the RUE-4202 that came with my new CDA-9885