another option is a cheap outboard mixer - I've used an old inexpensive yamaha MG10 for this for years - works great... no output module, the mixer handles modular levels well...
"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