If you find the treble piercing sometimes I recommend trying the Short Bus Olina mod with the mesh - install an Olina mesh on the moиth of the nozzle.
I did that and got a IE600 type of FR signature: a/ a bit more mid-bass; b/ less shouty vocals; c/ smoother treble + a bit more wider and deep sound stage (pushing a bit back the vocals creates a better sense of depth, while a bit taming the highs relaxes the too big magnetism of the treble).

Thanks @Sharppain I will try that. But the review must reflect the reality without any modding.

real question : how do u fit the stellaris to its case? if i roll the cable on my hand and place the stellaris in between the rolled cable, the stellaris nozzle is just simply too long to fit in the case, as u can see on my review below

Case is small, yep

@littlenezt @Sharppain Yes... case is smaller.... I generally place the IEMs/Shells horizontally to make them fit into the case. Even then it's quite a tight fit.... but the lid closes.