Speaker cable suggestions for Sugden A21SE integrated

I'd recommend the Cerious Technologies Graphene speaker cable. You might find one used, but it might have been purchased already.
I think an 8' pair go for $649 new  and in my opinion well worth the cost. A huge bang for the buck. If you have not seen it, here is an Audiogon forum regarding the products:
https://forum.audiogon.com/discussions/cerious-technologies-new-graphene-cables

AKG:  The speakers are Merlin TSM BME Black Magic monitors.  I've already upgraded the PC which did improve everything.  Thanks.

Bobby always recommended Cardas, Audience or JPS with his Merlins.  Perhaps look into those.  Not sure how they'll match with the Sugden, but a place to start. Best.....

Hi. I mainly use Kimber 8VS or QED silver anniversary XT cables with my Sugden A21SE and Spendor SA1 speakers.The QEDs are perhaps the most detailed of the two cables, but the Kimbers have a bit more "oomph" and is a great match for the Sugden and Spendor.