New summer home thinking about the following.

I use a Classic One Mk3 to drive a pair of Sonus Faber Concerto and I really like the sound. But, the Concerto is a pretty easy bookshelf to drive. I tried it with my Sonus Faber Cremona and it just did not have enough current to drive them. The A1 are relatively inefficient 4 ohm speakers. Based on my experience, I would be be concerned that the Classic One just does not have the power to drive the A1.  I have no experience with the A1, so am going solely on specs. But, look into whether the Pathos has the power you need for those speakers.

If you want more power from the Pathos Classic One MKIII’s they have a switch on the bottom and you can turn them into mono block amps. Both can be controlled by one remote.

https://www.dagogo.com/pathos-classic-one-mkiii-integrated-amplifier-review/

If you want to buy two of them.

Agree that one Classic One won’t have the juice to properly power the A1s.  Given the sound characteristics you’re after you should give a look at the Unison Unico Due or Secondo that are hybrid designs and offer more power in a similar price range.  Best of luck. 

Nice thanks for the insight guys.