I have heard the Audible Illusions 3A extensively at a friend's who actually recently switched to a Calypso as an upgrade - his words, and I completely agree that it is indeed an upgrade. He had originally bought the AI for its excellent phone stage but his record collection is now all boxed up and temporarily stored in my basement. The Calypso is not quite broken in yet but it does have more detail and much better bass. He also used to complain about the AI's customer service and had it sent back twice for repairs, both times under warranty but took months to get it back.