VR or BMF, I think it's the same crap with different heatsinks. But both of them does (as rated):
@12.5V
300w @4ohms
600w @2ohms
1000w@1ohm
they are slightly under rated, and as you can see from the voltage, you can get more out of it. THey have a remote sub control and have built-in stackability. I was about to buy one, till I made my move too late and was sold off in ebay korea.