@ozzy62 , yes, that's exactly my thought and why I wanted to hear firsthand stories of people who have heard CW IV with newer (say last 10 years) McIntosh gear. I totally get the historical stuff, but we are in 2021 and these are, for all purposes, new and different products. The CW IV is a different animal in my mind than the I, II, or even the III.
I'm curious because Macs can sound smooth, which may be a nice pairing with the CW IVs. One thing is for certain--the CW IVs are super sensitive to everything you throw at them.