So I get my GK MB212 on Friday afternoon via FedEx, at the same time I'm replacing my bridge and strings on my Upton SuperSwing...and fitting my K&K BassMax pickup...plugged into my Fishman Platinum Bass Pro DI...tested rig in my living room. Everything worked. I had a gig at the local brew pub in a couple hours, so I decided to use the MB212 instead of any other available rigs...Being a little scared of rattles and other gremlins that people have discussed on this Forum, I decided I needed to find out immediately for myself whether this combo id gig-worthy or overpriced trash...as I hoped, the combo seemed to have enough power and clarity in a rather crowded & rowdy venue (Halloween festivities). I ran the gain "lean" and the master "hot". The following night I used the combo at my weekly pub gig and it sounded fine and it was at lower settings due to less rowdy people. I'm running the Fishman in the passive input because it sounds better than in the active input. I plan on setting the gain "hot" and the master "lean" as an experiment asap. So far, the GK is cutting it in the "real world" and Saturday night my daughter carried the GK MB212 out to my van...37lbs.