Of course samsung create for samsung and probably wont work on other, but not everything exclusive. For example Ambient / transparency sound - product sony xm4, jabra, apple earbud, etc so many. Record 360 audio is exclusive for galaxy bud due to exclusivity. Dolby sound can work on many headphone, look at dolby sites.
Technically, what amp do is gives power to headphone over all frequency input without changing its source and without gives noise to sound. Is that hard? Honestly, no way that hard, it is classic technology. If people say that it change sound, then the amp alternate the sound by changing its frequency response or phase response and of course intended by manufacture. Is that snake oil? If you use sound driver from laptop, of course that is intended to be bad, but if you buy cheap china amp out there, probably will sufficient for your headphone, no need fancy hundred dollar amp.