I just got my Bergie HT322, and a Stewart World 2.1 Power Amp. For the short term, I decided I will use my Eden WT400 as a preamp for this setup. After experimenting a little bit with bridged vs. stereo mode, I decided that for most situations running the Bergie off of one channel of the 2.1 (650Watts RMS) was sufficient. Had my first gig yesterday with the new gear. Fairly large open outdoor space. First off, I had plenty of volume with the HT322 (no other cabs and no PA support) running off of one channel of the 2.1. I wasn't even close to turned all the way up. My drummer was absolutely blown away by the sound. He couldn't get over how full and clean the tone was. He was talking about it more than I was. I was thrilled. Because it was a big area, I got to stand way out in front of the thing and really feel the waves develop. Even in the wide open outdoor space, this thing was spitting out sound that was absolutely tight, focused, punchy, and very warm and smooth. It is a little scary how accurate and responsive the thing is, though. You better be ON, cause every little thing you do on that bass is gonna come through. We'll see. First test passed beautifully. Tonight and Tomorrow I have a couple gigs with my other band in very different indoor settings, so I will see how the new rig performs there.