Wow, this IEM is very tinny and lack bass. Sound stage is lacking, and sound is bright. I'll stick with my KZ ZS6 and VE Monks +. I will give it to my kids or my nephews.
MannyAkimDid you try burning them? Leave them run for 8-10 hours you might get better results. I come from TRN V80 which have ground shaking bass and i thought the same about those Senfers, but after let them burn in for 10 hours they sounded much better. Yes the bass is not that elevated but its still present.
MannyAkimAfter 72+ hours burning mine is sounding very good to the price ratio. Yes it has some ear-piercing treble and to somewhat a moderate bass but nothing overwhelming. Changing the stock cable + switching to foam tips changes the whole thing but the sharp treble still exists and I think I'm not sure though, it has some sibilance.