One thing about the different preamp sections that is useful to understand is that, if using an active bass, we are actually stacking preamps; one in the bass and one in the amp. The folks making the amps do their best to try to deliver a usefully voiced tone stack; but they have to base those decisions on a somewhat wide array of instrument voicings or try to make market based decisions.
For example, that "dark" MB voicing just happens to be exactly the sauce for a passive Jazz Bass, reinforcing where the J is a bit shy. That same circuit works pretty well as well for the 2 band active J circuits, with the input attenuation. But, I find myself cutting a lot of the voicing back to accommodate some of the 3 band active basses, which tend to have more low end support in their output.
The more evenly voiced amps require some rigorous EQ adjustment to get the passive Fender J; but, they also yin yang a lot better with some of the more modern onboard preamps. Including the 2 band active J circuits.
At least, that's my perception. I haven't found a one size fits all. It's a matter of understanding which tone stacks pair well with which instruments, and which aren't quite as well matched. I'm not sure there is so much of a pairing issue with the various cabs, other than whatever voice the player is going for; since a lot of these amps are using similar power modules.
The wonky part of this is that we have somehow gotten to where we have preamps in the instruments and in the amps; and the variations of those two stages makes things confusing. The instrument is still evolving.
FWIW, IMO, YMMV
For example, that "dark" MB voicing just happens to be exactly the sauce for a passive Jazz Bass, reinforcing where the J is a bit shy. That same circuit works pretty well as well for the 2 band active J circuits, with the input attenuation. But, I find myself cutting a lot of the voicing back to accommodate some of the 3 band active basses, which tend to have more low end support in their output.
The more evenly voiced amps require some rigorous EQ adjustment to get the passive Fender J; but, they also yin yang a lot better with some of the more modern onboard preamps. Including the 2 band active J circuits.
At least, that's my perception. I haven't found a one size fits all. It's a matter of understanding which tone stacks pair well with which instruments, and which aren't quite as well matched. I'm not sure there is so much of a pairing issue with the various cabs, other than whatever voice the player is going for; since a lot of these amps are using similar power modules.
The wonky part of this is that we have somehow gotten to where we have preamps in the instruments and in the amps; and the variations of those two stages makes things confusing. The instrument is still evolving.
FWIW, IMO, YMMV
. I have 5 and I still feel like I'm missing at least a couple more.

