im having a hard time hearing it too.
ive had some aggressive alignments on my car, rotated the tires and because of the alignment they suddenly made all kinds of strange droning noises at highway speeds.
ive gotten used to the slow shifting ZF9 on mine, but at times the lag is downright dangerous with how much the car hesitates. Like their drive of the new one, once it finds a gear its great fun, getting the car to shift down there sucks