Huh? It at least made a bit of sense if the senn were an upgrade from the AKG, but not the opposite, the K52/72/92 line is an actual dumpster fire.

>worries, everything was less than 100 bucks

Still respect your choices if you're happy with the equipment, but, even those "400 bucks" comments aside, the headphones you bought are all considered mediocre at best in their own price ranges, with those $100 you could've gotten some creative aurvana live and some ksc75 / kph30i, along with the kz (keeping the kz since a lot of people start with those bc dankpods, and maybe you bought them before the big sub $20 Iem improvements that came after the moondrop chu)

But yeah, i would honestly just return the k72 if it's not too late