I loaned my SVT-3PRO for backline at a little local music & arts festival over the weekend. (Yes, it's a mellow scene where that's a perfectly fine thing to do.) Ran the DI from the amp to the PA (post EQ). The last band up was slightly funky blues/rock band. The bass sounded fantastic in the mix so I went up to see how he had it set. The main thing I noticed was he was just slamming the preamp - that "Peak" light was pretty much on solid. Sounded pretty distorted on stage, but out front it was just thick and solid. So, if you have one of these amps, "don't fear the peak light". Crank up the gain, make the tubes in the preamp work hard, and enjoy the Ampeg goodness!