First off, I've not played through an actual SVT, though have played a 60's flip top and a couple modern SS Ampegs. I've also played guitar with bassists using SVT's. Ampegs work for me as far as the tone/feel-in-my-head goes; So I guess I'm more or less an Ampeg guy. Last night I played at a jam through a house-provided Hartke 115 combo that had no gain, not even a little natural compression and didn't have much tightness or definition, no matter how I set the EQ. Not to slam Hartke, but it was just not my thing. Thing is, there's a possible bass gig coming up at that venue, I don't want to drag my rig up its long flight of stairs and I'd love to find a preamp solution to use with their house rig. Anyone have any luck using a preamp to help a particular amp (Hartke HD115) whose voice they don't see eye-to-eye with change its spots? What's the best sounding/feeling Ampeg-growl type preamp out nowadays? I read where quite a few aren't too thrilled with Ampeg's SCR-DI "Scrambler" overdrive. Thanks!