On the subject of amplifier, I swapped out my current amp for something a little less powerful. I have a spare SimAudio Moon W3 amp that is rated at 125W. Although it only has 125W, it is a fairly stout amplifier. But is it good enough to drive the CS2.4? For the most part, it's not bad, but occasionally it seems to lack a bit of dynamic as if it does not have enough current to drive the speakers and the bass lacking a bit of snap.
I think 125W is more or less the cut-off power requirement for the CS2.4. I also have a tube amp rated at 50W but it just does not have any dynamic driving the CS2.4.