KMA Audio Machines Geminus Double Tracker

I watched all the videos of geminus and endgame and I was excited about how amazing the KMA doubler sounds, I thought I would like something like that when practicing with headphones, I was really looking forward to it but after trying it out my joy faded, I simply can't hear the difference between geminus off and stereo to stereo or mono to stereo mode, geminus off vs mono to mono mode I can hear the difference but it's not pleasant to listen to at all, I tried it on flat headphones and also on my stereo pedalboard with 2 x 12 cabs. I would really like to keep it if geminus really behaved like in the youtube videos but I have now come to the opinion that these are reviews with post-processed sound. I am returning the pedal but I secretly hope that I just came across a bad piece and that I will still have the opportunity to try the good one.