I've just purchased a new pair of HIFIMAN HE 400-S.
Is it worth upgrading the cable?
I read in a review somewhere that the stock cable is pretty basic. Not sure if an upgrade would be worthwhile.
They are now 70 hours into burn-in. I had a listen with my Astell & Kern Jr after around 30 hours and I was very underwhelmed.
They sounded closed, flat and lifeless but hopefully its a burn in thing and they will open up after some decent burn-in time.
Underwhelmed in comparison to my Etymotic ER4Ps, Bose QC 25s and a deceased pair of Senn HD239s.