By juice I also mean grip and control, not only powerTo me refinement would be a question, but "enough juice" would not be a concern of mine. The Humbolt is reputedly an absolutely tip top integrated at over 2X the price (in the US) of the Diablo 333.
One of the speakers I had with the Diablo 300 was the magico A3 and it couldn't control the bass 100%.
Jumping to the Humboldt made it very obvious.