Tekton Electron speakers powered by McIntosh

Hello everyone-

Here's my current system:

-Tekton Electron towers
-Mc402 (McIntosh 400 x 2)
-C2200 (McIntosh pre)
-Audioquest speaker cables until my Audience wire are repaired
-Aloia Cd
-Anthem MRX 520
-Piega  SUB 1 MKII
-Mac Mini with a Scott Nixon USB tube dac

To enjoy the Electrons for the first time, I wanted to see how they sounded hooked up to the McIntosh amp and pre, no sub. Wow, these speakers are spectacular! Extremely detailed. Perfect imaging. Big sound stage. Plenty of bass. And for the price, pretty badass. But....

After listening to several of my favorite's ranging from Allison Kraus, Pink Floyd, Michael Jackson and so on, I'm scratching my head as I see my beloved Mc402 amp pushin pretty hard for a speaker rated at 95 sensitivity and 4ohms. Pushin hard meaning, the McIntosh isn't going to have enough power even at 400 watts x 2 to run these. This is not the first time, Big Mac has fell short. Same thing happended with my Piega c10 limiteds,  (in storage)
not enough juice. 

I don't get it. How can an amp as monstrous, heavy, powerful, and expensive I might add, not have enough to run these speakers? If not, what speaker is that amp good for would be one question?

This afternoon April 07 2018 I'll connecting the Anthem MRX 520 with the Electrons, Mc402, Oppo 103 and the Piega sub and performing the ARC room correction. This should be a huge improvement and will probably be suffice moving forward for some great 2.1 listening/home theater as I've heard the Anthem and it's ARC is spectacular. 

This thread in a nutshell? The Mc402 and the Electrons I expected to be a match made in stereo heaven. Not yet...

Ideas, questions, comments are very welcome!

Regards,

Brent