I own a BE100 but have never played the JJ. From
What I've read the clean channels are not the same, the BE channel is but (obviously) the HBE and JJ channels are different. I don't know if the JJ has the same switches the BE100 does, but I've also read if you're going to buy a JJ make sure to order it from Dave and request at least a separate JJ master if not gain knob as the JJ is noticbly quieter than the BE channel...essentially making it a two channel amp in a live situation