Which amplifier should i buy

Air Tight ATM3 mono about 110 watt .

I like the sound of the Audio Research gear - and in my opinion have the ability to provide rock solid bass and the ability to delivery dynamic music as good as any solid state amp including my McIntosh.

I'd also give a listen to McIntosh MC901 at that price point.  Good luck and enjoy the process and the music

I would definitely go with McIntosh MC2301 Monoblock amplifiers. Check them out. You will not regret it. 
https://www.mcintoshlabs.com/products/amplifiers/MC2301

https://www.mcintoshlabs.com/products/amplifiers/MC2301

https://www.listeningpost.co.nz/Brands/McIntosh/McIntosh-MC2301-Valve-Power-Amplifier-__I.38672__C.2...

I have a Cary SLP-05 Preamp with the Ultimate Upgrade and Cardis wiring. Don’t waist your time with the SLP98 when you can get one of the best sounding preamp around. It’s a two chassis rig. I use to have Cary Audio CAD805 AE. As great that amplifier is, it wasn’t enough power. Trust me on that. It is perfect for an efficiency speaker which the Magico isn’t. To calm the screaming tweeters down, you are right to go with a tube amplifier and definitely a Monoblock. Keep it close to the speakers which give you the opportunity to run a shorter length of speaker cable to the speakers. I use to have the Audio Research Reference M160 as well as the Reference 250SE. The McIntosh MC2301 was better with imaging, midrange and bottom end. Everything sounded natural with plenty of grip. This will run cooler than the Audio Research by a lot due to proper spacing of their tubes within the chassis. Trust me, you will appreciate this. The tubes will last 2 to 3 times longer than Audio Research and VTL. I hope this helps. 

Duder, you need to do the leg work this time.  If you're asking about amps   Then you made the wrong decision on the Speakers 
because you need to know how to set those babies up
  Let's get that right