Yes I did. I also thought it would be nice to get a XLR ending in a speaker cable connection made out of the same wire and there was no interest in helping. We are not in the cable business as I remember. I then asked if they knew where I could get the same cable. Once again I do not know, only manufacture knows. Can not contact them. So it goes. I think with a set of cans that have the reputation of HE6 that they would supply a cable with speaker termination. I got 5 great amps that will not drive these cans with the 1/4 inch plug. How short sighted to include a 1/4 inch plug, only. Worthless. So is the pretty presentation box which you can not put the cans in with the cable attached. Short sighted, indeed.
I sent my 1/4" pigtail that comes with the 6s to hiflight. He took the 1/4" adapter off and lugged the cable. He then put the 1/4" adapter on a pigtail he makes. Perfect IMO.