>>I am very curious to see if I will notice a real improvement from the HK 120.
I went from an HK 3270 to HK630 driving my M2s and the difference seemed pretty significant. The M2s seemed like even better speakers on the 630. Don't know how much is better filtering between M2/sub vs. how much is related to bigger/better power amp but the difference seems significant.
Disclaimer -- I have *not* done direct A/B testing between the receivers so this is relying on memory only.
I think you're going to be VERY happy, even if you never know whether the speakers or the receiver made the difference
