Thanks for the info. I'm reading as much as I can 'bout modular but stumble upon a standard problem every now and then.
Strange thing is that a lot of manuals of modules do not mention the voltages of CV in and/or out (the sometimes frowned upon Behringer does have excellent tables w/ all info you need for instance). Is there an "unwritten law" or standard like 0 to 10 V for filter CV in if not otherwise specified? I mean: even if you have a utility module, don't you have to know the exact voltage specifications of the modules to patch 'm together via a utility module?