I've "downgraded" my electronics in recent years.
I back to running my Marantz AV8801 for everything as a pre-amp, though I run it in "pass through" mode with an outboard DAC. Using a Parasound A31 amp to drive it and the Founders Center. It's WAY overkill powerwise.
I think that one of the beauty's of the 120H, if you wanted a simple, 2 channel system they would be awesome with the built in amps for 300HZ down. You really get a feel for how little the amp drives for those split seconds before the sub amps kick in.
What is cool, if you really wanted to shape that top-end sound, I don't think you need more than 80 watts or so to really drive them. I'd like to have some fun with a tube intetgrated sometime. But I really think you could have some fun with integrateds with them.