I'm using the Naim CD5X in my speaker set-up with Harbeth.... fantastic stuff
Tried matching my Mapletree HD with the CD5i, CD5X and CA840C. Headphones used were RS-1 and K701.
If I'm to choose a player based on it's musicality, I'd say the CD5i. Exciting and engaging.
The 5x was so good that it helped my K701 rock! But with the RS1, it was too forward and hence almost unbearable for me.
The 840C is a tad lean and cold compared to the Naim... but charming in its own way.
Anyway, the I don't think it's terribly difficult to reterminate DIN i/cs to RCAs.. I sent a pair to one of my local audio shops and they did a pretty good job