I purchased a SVT7Pro a couple of weeks ago and started using it for rehearsals in an upcoming Cabaret show. I'd say I had about 20 hours or so on the clock with the head. I really like the tone it produces. Within the 20 hours, not a single hiccup from it. I'm using a Ampeg SVT410HE cabinet with it. The head is rack mounted and plugged into a Furman. The shows started Friday night and all went well. We have an intermission mid-performance and I just roll off the volume on my T-bird and let the amp run. No issue Friday night. However, last night I came back from intermission, grabbed my bass, rolled on the volume and....nothing. I looked over at the amp, no lights. power switch was on. The furman was lit and operating. I went over to the amp, turned it off, checked to make sure the power cord was firmly in the amp, powered it back on and nothing. Long story short I missed 1/2 of the 2nd act running across town to grab another head rig I have which consists of an SanAmp RBI and 2400 watt power amp. And that has never failed me. Today I'll check the fuse, but I am not a happy camper about this. Tomorrow Ampeg will be contacted.