Best Class A Amp under $2,000 used?

With regards to Glennewdick's comment -  
What about the more vintage class A power amps such as Acuphase or Luxman?  Which models were you thinking?  

What about 70's power amps like Marantz, Sansui or Pioneer?  Are these considered garbage sounding vs the modern age or are they comparable? 

Part of my inspiration to move to solid state was a purchase of a Kenwood 700 M which I think sounds amazing compared to my ICE powered amp. I figured a modern solid state version would be even better.  The Threshold looks nice.

That Threshold "e" series was the last Nelson Pass design at Threshold. Also, the recent work on the amp was done by Jon Soderberg. He worked for Nelson Pass at Threshold, so there is no better Threshold tech anywhere.

Interesting  - thanks!  

Why did you want pure class A.  As all have said most amps are high biased to hold in class A until a threshold wattage requirement is surpassed then it operates in A/B. I have never been sure of when Class A resumes during a peak then drop .   I owned Klipsch Palladium 1Ks which were biased to class  A for 125 watts.  I never knew when it changed.  *not a great amp anyway!