Also Naim can terminate any pair of IC's to a DIN termination for your CD5. I do not know what they charge though. I believe they can also upgrade your player to have RCA jacks instead of DIN. I have found them to be very responsive to emails and calls. I have a pair of Kimber's Silver Streaks terminated by Naim for my CD5 at work. I purchased these from an A'gon member in Canada. One other thing you may want to check if the CD5 is new to you: if it is a used CD5 check to see which PIC (chip) it is running. The earlier versions with the older chip (P501) will not play certain copyright protected disks. There is a simple procedure to check which chip your unit has which is outlined on the Naim site. If you do have the older one, Naim offers an upgrade kit which you should be able to get from your dealer for about $75. It is pretty simple to install - if you can add RAM to your computer you can certainly switch the PIC on the CD5. If you just bought the unit new, it likely has the newer chip (P109) in it already so you don't have to worry - the newer chip plays all CP cd's I've encountered flawlessly. It is a great redbook player! Enjoy.
There is plenty of information on the copyright protection issue (as it applies to Naim players) and PIC replacement on the Naim forum thread
here. This is the UK site. The gentlemen I contacted at Naim USA was Malcolm in customer service. He was very helpful.
Marco