Take a look here, however it appears the 1st reply is wrong. The 2nd one by Happy Listener seems to be correct as noted by the last post.
http://forums.naimaudio.com/topic/quesion-about-connecting-a-tape-deck-to-a-naim-pre-using-chord-chysalis-cable
Looks like red(R) and black(L) go to record input on the DR-3, with yellow(R) and blue(L) going to the playback output. There is a conflicting post here that states yellow is L, and blue is R.
http://forums.naimaudio.com/topic/tape-loop-colour-coding
You may need to try both ways for the output and listen to see which is correct. As always, connections should be made with equipment turned off.
http://forums.naimaudio.com/topic/quesion-about-connecting-a-tape-deck-to-a-naim-pre-using-chord-chysalis-cable
Looks like red(R) and black(L) go to record input on the DR-3, with yellow(R) and blue(L) going to the playback output. There is a conflicting post here that states yellow is L, and blue is R.
http://forums.naimaudio.com/topic/tape-loop-colour-coding
You may need to try both ways for the output and listen to see which is correct. As always, connections should be made with equipment turned off.