I own the Thiel CS7.2s, but I am not familiar with the Genesis APM-1. No speaker is pefect, but the big Thiels do many things RIGHT IMHO. It is an accurate and neutral speaker, has great purity of tone, and is superbly integrated. I'm sure the McCormack DNA-2 can drive the CS7.2s (it should at least double its power into 4ohms), but the Thiel CS7 is even a more difficult impedance load. You should listen to both the Thiel and Genesis speakers with your amp if possible. I drive my CS7.2s with Bryston 7BST monos in parallel mode, but have shut down lesser amps that are not high current designs.
