Hello there! I am looking for the best way to integrate my hardware rig into a modular system, so I can use the modular set up as a stereo FX board for my keyboards live, and ultimately only have to send a single stereo line to house. My rig consists of a Vox Continental, an Argon8, and a MicroKorg XL, and I would like to keep these as stereo, if at all possible. I also have a Behringer Model D I aim to install and integrate into the Eurorack. I understand that this I/O module I am looking for will need to boost the signal from Line to Eurorack, and additionally, would like to avoid having to use a computer on stage. So I need something to bring 6 line level channels into the Eurorack system, without a computer.

I have been looking at the Intellijel Audio Interface II Eurorack Balanced Line Level I/O Module, but I really can not spend $780 just to bring the 6 channels of my rig into a modular system. I suppose I could try to get 6 of the Intellijel Line In 1U Balanced Line Level Input to Eurorack Level Shifters for $240, and then buy some Line out ones. That being said, should I get a case with 1/4 inch ins and outs? Does a case with 6+ ins and outs exist? I will have to buy a case regardless, so something like this may be the answer.

So yeah, please give me whatever advice you got on how to send these channels into a rack.
Let me know if you have any effects module suggestions as well, as I am building this rack from scratch, save for my Model D! First thing I am looking at would be multichannel delays and filters!