recommended power tube amplifier for vivid kaya 45 speakers

Atmasphere makes some great points! There are a ton of speakers on the market today that are an absolute bear to drive..even with a ss amp! For example, the recent review by Jason Victor Serinus of the Jadis JA200Mk2 amps exemplifies what atmasphere was talking about. JVS used a pair of Wilson Alexia’s as his speaker of choice with the JA200Mk2’s! This speaker has a impedance drop to nearly zero ohms at lower frequencies, as a result it is known to be severely problematical with any number of amps...and basically tube amps need not apply. JVS in his infinite wisdom had no clue about this... and as such gave the Jadis a luke warm review, complaining of a number of issues that he failed to realize were the direct result of his horrible amp/speaker mismatch!
I have another friend who bought some new speakers at a big price point, basically blowing his budget on them...only to find out that the speakers required a ss amp with tremendous stability into basically a short! His low powered ( well flea powered!) tube amps were not cutting it...and his budget didn’t allow for the monster ss amps required to drive his new speakers...:0(

I am listening to the Kaya 45s at the moment using Art Audio Opus 4s.  The thing to note is that I am in a small space and sit 7' to to 8.5' from the speakers and the wall is right behind me so it takes very little power to hit reference levels.  Can't deny bass sounds muddy compared to the AVM.  

I normally don't turn it up that much and at lower levels it is fine.  Higher levels, undeniably a bit muddy.  

If I wanted to maintain more of a tube sound, I would go with an AVM tube hybrid like the Ovation SA 8.3 or MA 8.3s.  The latter I have a pair of demos available.  

@atmasphere Thanks for the info, not doubt that it is a bad news :), i still didn't payed for those speakers, i promised to the deliver the money for the speakers at Monday. I loved their sound and the TAD micro revolution sound, but probably i will go for the vivid. I'm confused !
Which amp do you recommend for those speakers ?
Thanks a lot for trying to help and have a great weekend !!!

@daveyf  Thanks a lot i will think what do next, i loved the vivid so probably i will change my longing for CAT/Jadis/Octave ... :(
Thanks a lot 

I suggest the OP read my review of the Legacy Audio i.V4 Ultra Amplifier at Dagogo.com before purchasing tube amplification, especially for those speakers.