Anyone know where to set the sd702 for unity when running my V2 in to it?
you have two realistic choices, 0 and -6, and many people pick either (the V2 outputs overload at +27dbu, or 1dbu greater than the max in of the 7 series units). I personally never worried about achieving "unity gain" when I had one and an external preamp, it was "what do I need to set so that it clips [on the SD] just before it overloads [on the preamp]" so that I would know to keep it under that overload point on the preamp gain.