Krell Duo 300 compared to Evo 302e or 402e?

I don't know how a 20 amp circuit would work. My monos are on separate dedicated 30 amp 240V circuits.

I'm also guessing that an amplifier's peak output is based in part upon the capacitors' ability to store electrical energy, but I am no electrical engineer...

I have the Krell Vanguard and my fans did go off in the summer but it's been all quiet ever since. It's smooth and very open sounding. The new Vanguard kind of reminds me of the Sim Audio I7 but less clinical sounding probably due to the class A design. They both have a lot of steps with the volume control.
If you like the Krell sound the new gear doesn't disappoint. Looks are just OK.

Thankyou Gold for your response here, the new krell equipment is still getting circulated to the users to give their opinions on the forum sites, give us more when you can, cheers.

Anyone hear the new Mono Solo's?

I've purchased a Krell Vanguard with the digital module direct from Krell. When I try to use the Blootooth it constantly drops out. I sent it back to Krell gone for a month and back in time for Thanksgiving. Alas it sadly has the same issue as before. 
  I gave up my Krell 302 and Phantom III preamp to purchase it so the entire family could enjoy the Krell. 
  Biggest mistake and the last. All I hear now is the wife completely gripping about the Bluetooth.   Cheap inputs on the back so high priced interconnects not needed.