Fractal FM3 into THR sounds muddy

I just got a fractal and for now I’m using my Yamaha THR as the speaker going right into the guitar input. I don’t have the XLR to 1/4 cable so for now I’m using the fx output 1 into the guitar amp.

I’m wondering what settings I want to use on my Yamaha to have it not modify the sound at all? For now I have everything at noon but all the presets sound a little muddier/less articulation than I would expect.

I’m wondering if maybe gain/master on my THR I s adding some additional distortion? Thanks!