Marigo Labs Digital Cable Assistance

I was looking at purchasing a Marigo used digital cable.  A local dealer has two Marigo Labs cables but he took them in on trade and knows nothing about them.  One is a  Marigo Audio Lab Apparition Reference Digital 2. The other is a Series 3A.  I found some info where the Series 3A was reviewed but no info on the Reference Digital 2.

Can anyone provide me with more information of these digital cables>

Thank you.