That is a Marantz 7C and the box on top of the Orion cross-over switched between it (with adjacent CD players) for 2-channel and the Lexicon for home-theater.
I'd like to say that it was a little smoother. The noise floor was slightly higher but not audible at the listening position.
I later switched to using the Lexicon second zone (it's all analog) for 2-channel with sound being about the same but providing remote volume control with an attenuation display in dB.