Speaker Cables for Class A amps

Depends on what specific improvements you’re looking for and what sound characteristics are most important to you.  Without that info this is just a crapshoot. 

I would ask ... Does your system sound Bright? or does it sound too laid back and warm? or is it more neutral (not too bright or not too warm)  Cables are tone controls that can be adjusted to correct things we might not like. I for one do not like cables that have Boxes on them of any kind. My system tends to be Dark and needs to be brightened up. I use a combination of Morrow Audio cables for Interconnects and I use Nordost speaker cables to great success. 

https://www.morrowaudio.com 

https://www.nordost.com/norse2/frey2/frey2-speaker-cable.php1

Matt M

@scottwsmith best way to go about it if you are in the US is to borrow several different cables from The Cable Company and evaluate them at home. 
Just keep in mind the heavy push of Synergistic and Shunyata. Just insist on auditioning other brands as well. 
I use Audience FrontRow speaker cables with Boulder 866 amp driving Wilson Sabrina. Include these in the demo. And check out Kimber Carbon or KS but copper only. 
 

I have used nordost in the past and while they are very detailed I found the shunyatas to be warmer sounding and liked that better wit the Wilsons,,  My first impressions with the Esoteric, it is pretty neutral,   Maybe nothing to change here,  I will pursue the cable co