Simple definition: someone tried to make a iem, said screw it and made it as tws, that's it nothing else, sounds very much above it's price, no freaky ahh bass (like our water floater called boat).
Initially sounded terrible I was like what and then I found the issue, my liquid silicon tips actually altered the sound of it and so I had to use default tips which are actually small
Fit is little bit on weaker side with default tips but you should probably update a better tip without a graphite core like mine.