Marantz CD6006 vs Marantz hd cd1

As I mention in my previous post I am upgrading my front end. While there is  discussion on the
Cd006 not much on the CD1. Is anyone familiar with the cd? Wondering if it essentially a smaller scale but equivalent 6006? Specs read very similar but may be something additional that I may be missing. This most would most likely be used as a transport. My system is redbook based. Interestingly what drew me to the cd1 is its small size, 12"x12.5" . Any insights or thoughts are greatly appreciated. Thanks Dave