I was warned. I thought I'd buck the trend and ignore the experts. I liked the sound of it in the shop. I thought I ran it through its paces. The Hartke 3500 has nice controls and sounds great when we are rehearsing. Besides, our band has an acoustic guitar, drummer, singer, and me. I didn't expect to need major wattage. I figured 350 would be plenty. Actually, it holds up well through most of the first couple of sets. But by the end of the night, as my drummer starts banging and the guitarist progressively gets his volume up, and the singer starts wailing, I've deteriorated to a pitiful gargle. That's at least what I hear from my onstage cabs. I've got the master volume at about 3-o'clock and the tube/solid pre's at about 11-o'clock. The parametric eq is scooped not too aggressively and averaging near the middle. There are also controls for hi and low gain that I keep at about 12. My on-board volume is usually topped out, but I use a volume pedal that I only kick in when called for. We play a place with a nice sound system, but, as with most places, the soundguy keeps the bass down. I'm sure my tone is OK through the mix, just not very pronounced. I can't really hear it through the monitors. Our style sort of requires me to be pretty distinguishable. So, I'm thinking I just need more headroom. I do play pretty aggressively on my Thumb BO. I use a 15" Bag End and sometimes I run a 12" Hartke speaker to my drummer when we aren't using a house system. I though 350w would hold up. I'm supposing I need to go with my original choice of an 800w Eden. I think I could sell the Hartke to someone who would benefit from it. I guess it was a lesson learned. I just hope 800w will be enough. there is a 1200w Sun that I could go for. But, like I said, I was warned that the Hartke 3500 would not work out for me. I hope I can find her a home. I just got it in August and only gigged it 4 times.