The beast!
Always remember to fire it up (standby on) when you first get to the gig, it takes a while to warm up and switch it off (via the standby switch of course) straight after the gig as you want it to cool down before you start shifting it. And for Gods sake use your legs, not your back! ALWAYS have it plugged into the cab before you switch it on, get a good quality cable from Obbm (they are amazing), and finally get it serviced once a year, enjoy, they are incredible, don't be afraid to turn the mid range right up otherwise you won't hear much difference in the 4 way mids selector switch, only took me 5 years to figure that out!