I really love this small speaker, but Soundcore is a bit lazy to prepare more presets. So, I compared the FR graphs on RTINGS.COM and prepared some custom EQs, based on FRs of other brands (with similar power). Don’t expect miracles with the 9-band EQ, it doesn’t mean that your Motion 300 will sound like JBL, BOSE, or Marshall, but I personally like most of them better than the default signature and like switch between them, according to the genre I listen to.
JBL:
Marshall:
Soundcore:
Try it, edit it as you like, and let me know if anyone likes it, or if you have an idea of what else I should try to simulate