I use the 9200 for my Volent VL-2's and my friend has the 9200-> C1s. Unfortunately I haven't heard the 6600's with the C1s or the Volents, but they were the original first choice for both of us. The plinius sounds much warmer sound that seemed to emit more emotion than the 6600's. Of course, we heard the McIntosh paired with totem speakers but both of us were sure enough to go with the 9200.
