Thank Jim !
I need a solution to :
1. input my studio mixer bus out (to send external synths to my modular).
2. lower the modular output to get into my studio mixer but in fact especially for headphones : stéréo out 1/4 jack (to not need any adaptor) TRS if available and a 'volume' knob.
3. send/return - send modular signal into a Beebo or an Organelle and returning with eurorack level. The Organelle output level is so low that i think it might be guitar level, perhaps so a 'gain in' knob can be very useful.
Don't know if it helps but here's my rack :
https://cdn.modulargrid.net/img/racks/modulargrid_1962355.jpg
I haven't decided on modules 'Befaco Out V2' and 'knob.farm Ferry' yet. In fact, I am a beginner so if you have any advice, maybe a type of module is missing?
Any suggestion ?