I recently sent back to Bettercable a set of xlr cables thinking that there is something wrong with them.I had 3 different amps that where defective,hum-buzz so loud that it hurt your ears. Now I have a Ati 3007 amp & its great,Im using rca cable since the xlr cables are being looked at by Bettercables.If they tell me the cables are okay should I be affraid to use them? Could the 3 amps been defective or was it the xlr cables? Bettercables said that they had never heard of there cables or any other brand causing that kind of a problem.What do all of you think? thanks didnt mean to be so long winded.