That would be a 2 ohm load. That is the one thing I really hated about my Mesa 412 when I had it. I was also using 2 heads at the time, and I just don't like the sound of most heads at 4 ohms. I would just run mono 8 ohm if I were you. Since the V2 doesn't have a stereo power amp and the cab doesn't really have any stereo separation to it, the sonic difference only comes down to the ohm load.