Luxman 509x or Simaudio 600iV2 with mágico A3.

I had the A3s with the 509x for a while. It is a good pairing. I never felt the amplifier was wanting in any way. It has good bass, is dynamic and somewhat exciting (not boring at all) and has good sparkly highs. I used Nordost cables with this pairing, fwiw.

I also had in my room with the A3s the JRDG Continuum S2 integrated, and also Primaluna 150 w/ch monoblocks.  These both were boring with the A3s. 

I had 590 before and wasn't my cup of tea.

Is it the 590AX or 590AXII? The latter is reported to be noticeably better.

I think he meant the Hegel H590.

Yes I meant Hegel 590.

I tried with several speakers and was dull power no finesse vs Luxman and moon.

I run 509x with S3MK1, same 88db/4 ohm rating.  At times I wonder what more current would sound like and at times I laugh out loud to myself just how good it sounds.  

FWIW the demo of 509x and A3 was all the talk of the FL audio show a few years back.  
Also FWIW used 509x is plentiful right now right around $6K, a bargain for sure.  
Enjoy!