It finally arrived ! (minus the trigger port P2 cable, oh well).
Initial tests are marvelous !!
Updated setup: PC->USB->Dx7 Pro in PreAMP -> XLR -> L70 with high gain, using XLR balanced out.
With the L70 in high gain i can rattle the He6seV2 drives at 85% volume (should be the HP limit).
At 80% i can mainting superb Bass while not losing power in any other frequencies, plus, no clipping experienced with the following EQ:
Thanks for all the help guys, may good melodies find you.
I will be updating this thread after the initial month, but so far so basss good