so a complex oscillator... then see advice above..
the instruo cs-l is a complex oscillator which also includes a wavefolder - having checked the manual - it seems that the wavefolder cannot process external signals - so if this is what you want - ie a wavefolder to process signals other than those generated by the c-sl, then yes, you would also require a separate wavefolder - I suspect this is common with most complex oscillators that include wavefolders
a 'bifold' is a specific wavefolder module made by intellijel and as such is not included in the instruo c-sl
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities