This is written after only few months of use and also not that often as well, so please take my impression with a pinch of salt.
I cannot remember when I exactly bought the Basic, but I knew that after testing them out brifely with the already extinct Sony ZX1, I find them to be already impressive in my experiences with playing around with earphones and sources.
Since then, I have switch the stock cable to the ones of Ibaso IT01 (based on my experiences with the stock Ibasso IT01, they have the mids and highs that I find to be slightly more than acceptable) as I was guessing that with the latter set of cables, maybe the Basic may sound much brighter as I find the sound with the former set of cables to be too dark for my personal taste.
After a few months of use (not as often as I want to obviously), in my opinion, they have always been the best when it comes to heavy bass based music, yet also decent with a drum kit as well.
But I still do not find them fit for example, an experimental album only consist of a clean-sounding electric guitar and an electric bass guitar. Normally, I will just use the stock New Primacy to do the job instead.
Basically speaking, if you want to buy it only with the stock cable, in my opinion, think twice. But once again, they are great with heavy bass.
Thanks for taking the time to read if you have just did so.