Nordost Frey interconnect hum


I bought a pair of used Nordost Frey unbalanced interconnects here and i noticed they induce a hum through my speakers when my preamp is off or when the cables are only plugged into the power amp. The strange thing to me is that my Nordost Heimdall interconnects do not induce the hum under the same conditions nor do other shielded interconnects. They do the same thing on another system as well. I understand that both the Heimdall and Frey have the same 97% shielding and the only difference is 2 extra center conductors. I'm waiting for the seller to ask Nordost but i thought i would ask here if anyone can explain it.

Thanks for any advice.
pongagt
It's always good to read about great customer service, but really, at the prices they are charging, you should expect service like that.
Well they did fix my cables and i am very happy for that. I was not happy with the seller's terrible communications and lack of response to my concerns. I therefore left him negative feedback considering all my concerns and the rma were documented. It seems Audiogon has different interests considering they have not posted my feedback.

I don't expect this post will last long but it will last longer then my Audiogon account since i am closing it as soon as i finish this post. I just don't feel safe buying off a website that puts the interests of sellers over the documented facts of buyers. I'll stick with protection from Ebay.

Thanks to all those that took the time to try and help me by replying.
Wenn this cable came out I was asked to test it. Overall balance was not good. Compared to the Valhalla, low freq were quite poor. Mid's lacked focus and very clinical sound. The low freq. were even to thin in sound. I did test the interconnect and speakercable togheter.
Bo1972, I would sure hope that the Valhalla beat the Frey at over 4 times the cost i.e. $1000 vs. $4500
The balance is not good of the Frey. The Red Dawn rev2 and also the Baldur are better balanced cables. Balance between low, mid and high freq.