Reference series from my knowledge is excellent! But dealers of Marantz tend to offer the basic line!Your correct. Marantz has two lines of gear - their excellent Reference line made in Japan and is strictly two channel.
And then their is their basic line, made in China and comprised of mostly HT gear. This is where the money is at as true 2 channel HiFi has become a very small market compared to multi-channel surround sound. And we all know they are two different things.
If Marantz currently has a stigma in the audiophile world, its that they carry this basic HT line. But no doubt, this is also where the volume of their sales and revenues come from.