So, I have ordered this b810 800w, to replace my hartke 215 500w. I'm powering it with my b600h (450 w at 4 ohms). I think since I'm getting another 4 ohm cab, that I might just want to get a 4 ohm head, so I'm looking at the b800h. Now, I play in a shoegaze/ punk band, Im not so much worried...