To my understanding, Mark Levinson. lost control of Cello to Rick Adams - it was not a pretty sight. Adams sold off the company and all inventory last fall.
Cello sold to Matthew James, Inc., phone # 203.867.4008. I've been told they are now offering service on the original gear and will begin production of new equipment this summer.
I'm not a dealer, just a Cello owner who has been keeping track of what occured.