I owned 1+1s for many years. The best sounding amp that I used with them was the CJ MV-55 tubed amp. It was not the best for the bottom end but was very rich in the lower mids.
I was also pleased with the CJ Premier 11 - better low end than the 55 but not as rich souding.
The best solid state I had was a Krell KSA-50. Outstanding bottom, exc. power even though 8 ohm rating was only 50 watts.
Second best SS - an Acoustat 120.
The Acoustats are so revealing - I'm sure you will have a great time with them
I was also pleased with the CJ Premier 11 - better low end than the 55 but not as rich souding.
The best solid state I had was a Krell KSA-50. Outstanding bottom, exc. power even though 8 ohm rating was only 50 watts.
Second best SS - an Acoustat 120.
The Acoustats are so revealing - I'm sure you will have a great time with them