Sorry if the title suggests a flame type thread - that isn't what I want here. I just don't have experience with other preamps - and I have two basses that already had EMG preamps at the time I bought the basses. I like them both just fine - but I notice whenever searching TB forum about preamps, I see a lot of hate for the EMG preamps and a lot of love for nearly everything else.
My gut sense is that the EMG preamp is just neutral (doesn't add color) and just gives bass/treble boost/cut with some minimal ability to adjust the behavior via dip switches. In fact, I cannot hear a difference (compared to passive) when I switch the preamp in with tone controls centered - so that's why I say it seems neutral to me.
And when I read discussions of other preamps, the Audere is described as not colored (so what is so much better about it than the EMG? It gets a lot of love and the EMG gets a lot of hate). Sadowsky preamp is described as having a unique color that you either love or hate - that it does just exactly what is needed to sit perfectly in the mix. And so on
One of my basses is a P-J with EMG active pickups and the BTC with volume, stacked bass/treble and blend ... no ability to bypass since the pickups are active. I'm running it 24volts

just because I can. I'm using two A23 batteries so the battery pack is smaller than a single 9v and the specs say it can handle 24v fine. Can I hear a difference? No but I run it that way anyway.
The second bass is a P-P with passive pickups and the BTC with separate Bass/Treble knobs. It has 3 position switch instead of blend and active/passive true bypass (so you can still play even with a dead battery) and a passive tone control that works in both active and passive mode. I'm just running this one 9v at the moment.
Anyway --- I'm happy with both of them (and of course, if it ain't broke ...) but I am still very curious what it is that people don't like about EMG and what I might get by trying an Aguilar or Audere or some other preamp.
thanks in advance!