These earphones excel in this frequency range, if you feel that these lack bass then either you are not getting the correct seal with the bud you are using or you are expecting fake, loose and rough bass, because, these ones produces a well-rounded, clean, smooth, punchy and solid bass that does not shy away to the back seat, it is powerful, forward and comes right at you, it is phenomenal for an earphone with such small driver, lower lows (bass extension) especially is deep and super

Finding the correct fitting bud was a challenge to me, despite the generous range of tips that come with the package, I couldn't manage to get a good seal, finally the comply foam tips were the ones that did the trick, I ordered additional tips from comply (size 400) to get the perfect fit and that totally had a very positive impact on the sound, as with every earphones, good seal is the real deal