How do I connect my EIMs to my guitar amp modeler?

I recently bough the Simgot ew300 for my first pair and was wondering how I could connect them to my amp modeler (Valeton gp200) without the tone sounding sharp, tried plugging them in through the phones of the pedal and the aux of my laptop but both sound the same. Yet the EIMs of the studio we always go to dont color the sound of the modeler, any help would be great. Thanks!