I'm in the market for new gear. I'm torn between buying some "off the shelf" amp, and basically building my own rig with a pre/power setup and a parametric EQ. On the one hand, I like the flexibility of being able to shape the tone exactly as I want with a parametric EQ, and not being stuck with the EQ frequencies & bandwidths specified by an amp maker. Plus, with the power amp I'm getting more power - sometimes a lot more. On the other hand, I'm wondering if these bass amp manufacturers, with their years of experience & testing, aren't better at "building a bass amp" than me. After all, they are the experts, right? Of course I could copy the EQ of almost any amp with a parametric... Then there is the factor of the supply of power itself - is it likely to be "better" in some way in an amp designed specifically for bass guitar than in a "generic" power amp for universal application? Is there anything specific about the power demands for bass that could make a power amp unsuitable, and thus a bass amp superior? Are there any pre/power users who went back to an amp head, and why? Obviously, it matters specifically which amp and power/pre/para setup we are talking about - I just mean in a general sense.