Sorry, maybe I didn't describe correctly my preferences so far. I actually like the warm setting with the scooped input when using my Bartolini equipped MIJ '75 reissue jazz bass. It seems to really fit the tonal profile of that bass in the music I play. However, when using the warm setting and scooped input while playing my American Professional II P Bass or my Stingray Special 5H, I don't like the tone at the high end of the eq. It sounds too clanky and ganky and I can't seem to eq it out. However, I am starting to find some progress with the P Bass and the Stingray using the modern setting and flat input. The eq controls using these settings seem more intuitive for these basses and I get better control over the high end clack I dislike.
I absolutely love what the 803 can do.
All the settings work great for me, just takes me a little fine tuning for each bass.
I've got a modded 70's Jbass with Dimarzio Relentless J's, a '71 Precision with a Delano P pick up and a Seymour Duncan HawkBucker in the bridge position, and an modded Epiphone TBird with 3 pick ups.
And each bass at each amp setting sound great.
At first I was partial to the warm setting, but as I dove further into everything else.
It opened up a whole world of tonal opportunities.
But I'm also using an Empress para eq for bass, and man!
I can get what ever tones I've always chased after, with all 3 basses.
Of course ymmv, and my basses are all passive.
It's all subjective when it comes to what tones we wanna hear.