My current board/chain rig is:
Boss Volume
Boss Distortion/Bass overdrive
Morley bass wah
MuTron III
Digitech synth wah
Digitech Whammy II
Boss Chorus
Boss Flanger
Boss Tremelo
Moog Bass Murf
Digitech Compressor
Boss octave
Boss Loop Station
Boss reverb/delay
a Morley A/B switch fopr multiple basses
then a rack tuner, power conditioner, my Alembic pre amp.
All mogami, monster cables
might add more distortion options this year.
I used to run the effects only through the treble pickup and ran true stereo-two amps- but I soon will run them mono to a crossover and two cabinets.. this way the Moog, Mutron, synthwah, and other effects sound much richer.
Alembic custom 8-string (The Riff King) and soon a 4 string series II (OhMyGa) plus a custom fretless..all stereo
BTW I have even more crap for my electric guitars.
Over twenty years of simplification and enhancement, improvement and trial, trial, error, error...