So, I did grab a quick vid (mostly because it's easier to do than get an interface and do sound). I apologize for the upside down pedalboard but there's not other place to put my little phone tripod.
This is a patch I'm working on to 'replace' one that I use live. The first half is 'dry' then the second half is the same sound but how I use it, followed by chorus and a delay pitched with 5th and octave, so you can sort of get how I'll apply the tone. The bass is my stage bass, a Dingwall NG3 with a little bass boost applied at the preamp but the lo-mid/hi-mid set flat. Amp is my LM2 set flat into a basic Avatar SB112 (my home practice rig).
I've got some more work to do with it. The 'volume swell' is mostly dialed in but can use a bit more adjustment in both the speed and the sensitivity. The filter may need some tweaks in it's depth and resonance. I worked from a blank 'initialize bass' patch rather than another previously designed patch. It has expression set to filter frequency (done through the hub), and the frequency is maxed out at the top but pulled back in the lows to '40' so you don't swamp out in the deep stuff.
...and normally this is a sound that I traditionally volume swell into crossover so I have clean lows and the swept filter above but I don't think I can get the C4 to have that level of facility. I'll probably bring the second voice up clean under the filtered voice and match the swell in the second envelope and take that as good enough.
My traditional pedal signal path would look like:
Mooer Slow Engine Volume Swell -> Crossover pedal -> (highs to Frazz Dazzler v2 Fuzz->Xerograph Deluxe with Expression -> back out, combined with clean lows ->Polytope Chorus -> Timeline pitched delay -> HPF-> out.
I use a similar tone but without the chorus/pitched delay for another song so I'll clone this when I'm done and clean it up a bit for that.
Other thoughts: The distortion/delay types in the C4 are workable to feed the filters & use with the synths but they're not going to replace your exquisitely curated fuzz pedal on your pedal board.
None of the filter types' frequencies ranges go 'as high' as my Xerograph does. On that pedal I have my upper expression limit set to where it basically goes inaudible on my rig in the highs, while I maxed out the upper limit on the C4 and could have used a bit more. I pulled through all the distortion types to try to feed it more in that range to see if that would help and couldn't find any additional lovin' there...