Check into VH Audio and build your own. Buy the best ends/plugs you can afford and spend the rest on the cable. Chris can help you. For an A21 make it a 10 gauge cable, not 12. Don’t make the cable too short either... hopefully 5ft works. I’ve gone to Home Depot and bought bulk cable and threw on Furutech plugs that sounded great. Don’t skimp on the plugs!
I’ve owned the Shunyata’s, Nordost and Kimbers and they were fine, but for the money, especially on a power amp I’d suggest Wywires Silver Juice II HC (High Current) on an amp. You should be able to find these used in your budget or if you reach out to Alex directly he probably has a former show demo he’ll help you with. He was offering a 40% discount so you can probably pick up a new PC as well. Alex is easy to work with and very honest. Good luck.
I’ve owned the Shunyata’s, Nordost and Kimbers and they were fine, but for the money, especially on a power amp I’d suggest Wywires Silver Juice II HC (High Current) on an amp. You should be able to find these used in your budget or if you reach out to Alex directly he probably has a former show demo he’ll help you with. He was offering a 40% discount so you can probably pick up a new PC as well. Alex is easy to work with and very honest. Good luck.