Not sure if I have enough oomph.

there is a difference between being just fine and being able to feel the low end thump that comes from having raw watts in your amp regardless of volume ... I think your underpowered for the speakers to truly shine

Hey, I own the Studio 2. These speakers go down below 4ohm. I believe it’s 3.78 ohms. I had an Ayre VX5 amp that did push them without distortion but they wouldn’t disappear. Even though the Ayre has 350 watts at 4ohm that is about where they capped off. Think of them as Maggie’s in a box. I use the Luxman M10X amp. It works great because it plays all the way down to 1 ohm. One trick if you feel they are a little under powered try tilting them forward with the spikes. A friend has the Sim 400 mono blocks on his Salon 2s. He loves them. Hegel line will do pretty good because of the damping factor. If you can find an older Plinius amp for about $3k it will make them sing due to all the class A power. The reason I got an amp to push them correctly is because the sound is so real you will be a little freaked out once they bloom. Hegel has a new 600 amp that just came out so the older 590 should be a steal. I hope this helps. 

... story of my life!

with revels, it's more about having high current delivery than raw wattage--i've run mine with a 125w parasound (among many others) which does just fine. now, i don't think i've heard your krell, but reading the specs it should be more than enough--it claims to drive impedances below 1 ohm and to deliver a gazillion watts into 2 ohm.

Okay, I’m tired of reading responses here that these amps don’t have the juice to sufficiently power these speakers and who are clearly not familiar with this amp’s capabilities.  Here are some facts…

Each amplifier is capable of delivering:
160 Watts into 8 ohms
320 Watts into 4 ohms
640 Watts into 2 ohms
1280 Watts into 1 ohm

So please, stop with the nonsense that these amps are underpowered because that’s just silly, misleading, and ignorant.  I also think they could make a sublime match sonically with the Revels and would love to hear the OP’s impressions once he gets things.settled/burned in.