I've got a Marantz remote extender for the RC2000MKII. It converts the IR signal to RF and sends it to a box that converts it to back to IR. Just like any other remote extender but it is designed especially for this remote. Clips on to and looks like it is part of the original remote. $99 new, sell for $50. No box or manual, but it really doesn't need one. Plug and play! Email me if you're interested.