This is my board at this moment...
The two missing spots up top (right to left are: Boss MO-2 Multi Overtones & Boss SYB-5) and the lower right will shortly be a Boss RE-202 Space Echo.
The signal chain is/will be:
BC-1X > SYB-5 (WET > CRBP > SIF #2/DRY > SIF #1 with Mono OUT) > B/BA > OPUS (DI with Cab Sim and 1/4" Output without cab sim)
That is the front end MONO Bass signal with ENORMOUS sonic capabilities thanks to the SPECTRUM Intelligent Filter. (I have the SA 168 midi adapter hooked up under the board running off of the 5 DIN Midi from EQ2 and utilizes the midi Thru (1/8" TRS) to the Two Notes Opus for channel #1 control with the SA 165 SOLEMAN).
Note: the SA 161 Dual Expression Pedal runs #1 to the SOLEMAN for (a) a Volume Pedal on the EQ2 stereo WET side chain OR can be assigned a function with the SPECTRUM & (b) #2 will be placed in the SYB-5 (Exp Input) for available control of the LFO/Envelope characteristics when/if engaged. (The SYB-5 also has a HOLD function on the WET output and no effect on the DRY output.)
OPUS > MO-2 (stereo output) > SL-2 > RE-202 > RC-5 > EQ2 > Stereo Field
The AMAZING utility of the EQ2 as the Master EQ (with HPF/LPF settings - Limiter - Gate - Boost - Tuner - (not to mention graphic or parametric EQ and possibly Dr. Who's Tardis?) is an unbelievable tool for the end of this synth chain.
Note: the RE-202 (unlike the RE-2 or RE-20) has control of the preamp for distortion/saturation for this side chain and can be run on its own like the SPECTRUM can run distortion on its own, too.
I no longer own an Amplifier or Speaker Cabinet...
If I could only own/use three pedals it would be the Spectrum Intelligent Filter (SA 168), SA 161/165 & EQ2. (The OPUS, of course, is my amp/cabinet)
The other are very nice as well, but have other tasks.