Affordable integrated pure class A?

Arcam and Ayre are two brands I'd listen to first.

Ayre integrateds are quite affordable used.

Agree agree with post about AB amps - my quad qsp power amp had AB power but used A purely for first watts then AB on demand for surge(they call current dumping) - very smooth and detailed . I partnered with valve pre-amp but they make integrated too so may be economical option. 
The integrated is elite model. 

Kinki Studio EX-M1, first 10 watt is in class A. This is typical more than enough with speakers having average sensitivity. In AB it delivers 215 rock steady watts in to 8 ohm.

Unison research used  another option. 

Thanks guys. I’m assembling a system from scratch and have heard so many good things about pure class A. I’m looking at bookshelf speakers in the 2k range.

I’m coming from portable audio and I’ve got the LHS GeekOut V2A headphone DAC/Amp which is class A and sounds so good. It’s punchy, detailed and full bodied - by far the best portable source I’ve heard for dynamic drivers (not BAs).