High end Dual

Does anyone remember that mid 80's attempt by Dual to compete with the sota at that time? I bought this 3 hung sprung Dual in gloss piano black for a grand which I returned after a couple days,... complete garbage. 3 pods housing the suspension kinda like an Oracle. I don't remember the model and I can't find it anywhere on the net.
  I bought a new Dual 622 for $300 new in 1981. At that time there was one Dual model more expensive, the 645 or something like that,  but the salesman talked me out of it, said that it wasn't worth it. Sorry but I don't recall the Dual model you are referring to.