Maybe this equipment was so obscure that no one remembers it. I remember ads in Audio inside the covers announcing this line. There were some pretty sexy shots of the faceplates in the ad. There was to be a preamp with tone control setup simular to and designed by Cello.And no, it wasn't their April issue! I think the relationship between Cello and AR is simular to that of Pass and Adcom. It is possible the equipment was prototyped but never sold. I heard a pair of ESS Transars in the early 80's which I'm not sure were ever marketed.