I can see the appeal of a separate pre- and power amp, especially with all the great preamps out there. Plus, pick whatever power you need and rumble on. However, it seems like there is a potential for problems, like 2 pieces of equipment to go bad instead of just one, differences in impedances, and something that I have seen mentioned, but have not figured out, that some people don't like to bridge their power amps. Is this a reliability question or sonic one? I can see the advantages of an integrated bass head: complete compatability of the various stages, and some type of "sonic signature" that would probably exist by having the same designer do the whole enchilada. That being said, I am still drawn to a separate pre- and power amp. I play fingerstyle with TI Flats and am running an Ampeg BXT-410HL with my blues and r&b 4-piece band. Any real world experiences would be appreciated!