I've got a Ampeg BA-108 practice amp that sounds great for practicing at home, I'm chasing that same tone on my gigging rig. I have a Genz Benz Shuttle 6.0 with a Barefaced 2x12 cab. It's very loud but lacks the character of the Ampeg. Seems to bark out the notes at volume rather than the Ampeg what seems to be more the sound of the bass. EQ wise I play both setups pretty much flat. Use a compressor with the Genz Benz. I'm wondering how much of a difference getting another pre-amp and plugging it into the effects return would make? I realize as well the room I'm playing in is going to make quite a difference also but I did read on these forums there is an "Ampeg sound" that is in all the Ampeg gear regardless of solid state / tube. Not really after a tube or overdriven tone, just something I seem to be missing on the Genz Benz.