This is my first time on this forum. Please forgive me if this topic has been covered. I need a new amp. The one I use now is not up to the job. Instead of just buying a new amp, I've been thinking of getting a separate pre-amp and power-amp. I don't see many players doing this, but it seems like a few players on this forum do. So what do I need to consider when buying these two pieces of new equipment? I think I'm going to get an Ampeg SVT pre-amp, because I used to play and SVT-4 and I like the sound of it. But what should I know about power-amps? Can I get a power-amp like ones normally used to run a PA and bridge it? Would it be better to buy one of these mono-block units I keep seeing that are made especially for bass? And why are they so expensive? Are they all-tube, and does it really benefit bass players to have all-tube power? What kind of wattage is needed to run 8x10 in this kind of rig? I like to play loud enough for the guitar players to ask me to turn down. Is there a good brand or model of power-amp that works well for bass? Is there anything special I should know about hooking up this type of rig? And lastly (maybe it should be firstly), who recommends this type of setup and who recommends a traditional amp head? Thanks for your help.