HDJ 1000 headphones sound like they are surging…
my cousin replaced my Sony V6 headphones with the Pioneer HDJ1000s…i notice when i have them plugged into the Audio 2 they develop a funky thing where the sound is almost throbbing…strange…when i change to the sony mdr v300s i dont notice this problem…
i have my HDJs plugged into my laptop as i am typing this and don’t hear the throb…
i just unplugged them from the Audio2 while it was doing it…
strange…
anyone?
do you mean that the bass is harder when ist plugged into the audio 2?
maybe you forgot the headphone volume up high in traktor.
i have never noticed a problem with this… either plugged direclty into my laptop/ipod/phone or into the spin i use (i dont have a A2DJ as the spin acts as my soundcard, so i couldnt help you there).
headphone vol sounds like your best bet… or go exchange them for a new pair (i know Guitarcenters warrenty will allow for replacements no matter what – i think for 2 months at the store you bought it from then after you gotta go to the warrenty peeps.)
i personally love my HDJ-1000s. i wish i woulda sprung for the 2000’s tho, the alloy headphone joints woulda been pretty sweet to have – i use mine for djing, but also for skiing cause it keeps my ears warm 
i miss my old sonys 