Tube monoblock options?

would agree with atmasphere, how much power do you need and what are you driving?
if you need big power with Balanced inputs Series 2 or 3 of the VTL MB-450 should do the trick.

lilchris9 OP

Like I said above a 275 or 75 will do very nice for the Kanta’s mids and tops, but they won’t drive this kind of bass loading very well between 60hz to 150hz
As with the combined impedance and -phase angle it will look very nasty, down to 2ohms to those tube amps.
And if those tube amps were bridged, it would look far worse (deadly) to them.

https://www.stereophile.com/images/1018FoKan2fig1.jpg

If your not capable get some one who is, shouldn’t cost much, to spit the xover and add another set of terminals to each speaker for the double bass units, pretty easy job, and bi-amp with a Class-D on the bass.

Cheers George

MC2301's.  Heaven!

And, though he has responded to this thread, Ralph is too classy to boost his products.
So, if I can speak for him, I would recommend Atma-Sphere amplifiers in a heartbeat.
Bob

Really!!!

If your referring to OTL's into those loads 🤦‍♂️ The bass will sound like a stick of salami wack’ed against a lounge your suit, and it’ll be all mid/highs dominated.
https://www.stereophile.com/images/1018FoKan2fig1.jpg
But if your referring to his up coming yet to be released Class-D, it has a far better chance of driving them.

Cheers George