Hi everyone, I've been enjoying the wealth of knowledge and opinions in this forum. Now it's time for me to call the experts. I want to run a head and power amp together. I don't want to damage my gear! I have an Ampeg B2r, Hartke Mx 410, Avatar B115. Pretty good sound. Gets me to the gigs, but a little lacking in power. I need to push it to the limits to be heard in the loud rock band I'm presently with. I recently aquired a Berringer MDX2200. Put it through the effects loop. Not clipping like I was, but still no headroom. Today I received my latest purchase. A used QSC USA900. This is my current configuration. Bass--Ampeg--effect loop--Ch1 compressor--Ampeg--4x10 --------------pre amp out--Ch2 compressor--QSC(bridged)--115. I like the fact that I can balance the two cabs with the Ch2 output knob. No problem with volume now, but what about the Ampegs safety?