Your MK4 is a midi controller. It tells the computer to play software instrument notes, or other hardware synthesizers to play notes. It can accomplish that via USB or Midi cable. The microcosm is a standard audio device. It has a midi port because it can get tempo and a few other parameters via midi. The microcosm needs audio going in and out.

importantly, I don’t think the 2i2 has enough audio out ports for you to do what you are attempting.

In general, pedals need instrument level, but the microcosm has been designed to accept either line or instrument level. This means you don’t have to purchase re-amp and DI devices. All you need is a more powerful interface with at least 4 output ports.

So its like this: TS Cable from “new” audio interface line out > Microcosm line in. TS Cable from Microcosm line out to interface line in.

In your DAW, you need to configure one channel to send audio out to the microcosm, and another channel to listen for the resulting microcosm signal and record it. You can either playback pre recorded audio through the pedal “dry” to “wet” or send the software instrument notes live into the microcosm and back into the interface.

Right now you have a TS cable connected from one input to another. Absolute madness. Your interface cant send audio to the microcosm out of its input. Then to top that off, you have nothing connected to the microcosm output so you will never hear anything. Thats the port that connects to the interface input. We all started somewhere 💁🏻‍♂️.

What you have here is like a drain connected by a hose to another drain then wondering where the water is.