jarret, I condidered converting my 1x12 invader into a head at one point a couple years ago. Randall said it was possible but sort of discouraged it, because the chassis is different. The tubes hang down versus sitting upright, so the head cab has to be a custom order. I don't know if his current cab maker will do it or not, and what the cost would be. Also, he mentioned a possible less than ideal ventilation issue, but I don't know if it was real significant. That said, it could be done, it just wasn't as easy as swapping for a head cab. You would likely be better off just finding a head, and selling your combo. I bet the tone would be consistent. You could even set the bias identical and use your current tubes if you were really worried about a tone difference. Or just be happy with your 1x12 combo!