We looked for a client. Very hard to find. I would watch Ebay, and try to match up this remote by browsing. We could not find a replacement number for this remote. You could always contact Carver themselves as well: 

http://www.carversound.com/carver-amplifiers/

Our Carver replacement remotes are here: 

https://www.remotecontroldepot.com/carver/

You can also find a manual here:

https://www.hifiengine.com/manual_library/carver/mxr-2000.shtml