Just gave a short run of the recabled Qian39 and below are some of the tracks i've used:
Celine Dion - All By Myself
Sarah McLachlan - Fear
Enya - Aniron
Star*****er - Pop Song
The Black Keys - Everlasting Light
Wilco - Pieholden Suite
Rest at at random while i was typing:
Cheer Chen - Child (Mandarin)
Benji Hughes - Do You Think They Would Tell You?
Natalie Cole - Miss You Like Crazy
Of Montreal - Gronlandic Edit
The setup for me is through my desktop with stock Walnut V2 as an amp and the line out is a generic copper cable which i have gotten from AE. Side note is that the Walnut with the copper cable is actually pretty bassy, and i have certainly gotten used to the sound lol. I used 2 donut foams over the Qian39 as i dont want to muffle the trebles as i kinda enjoy brighter sounds but not for extended period.
Abit of foreword, the stock Qian39 is very well know for its bass and comfort, as it has one of the smallest body among all earbuds i must apologise that i actually have very limited vocab with sound description so bare with me for awhile. And one more thing is that i have not used the stock Qian39 for abit, and alot here is based on my memory.
Bass: The bass quantity is still there, but i would say is sound more refined now. Previously, i must say tho they are there, the purpose is like "hey bro, i am here" kind of bass. Now it sound like, "check out that hot chick (bass) over there". Its there and u can notice how pleasant it is. I dont know if my idea of midbass is correct (my idea is the shake at the end of the notes which is super nice to hear), if it is, the quantity and smoothness is there too.
Mids: Are always pleasant for the stock Qian39, i didnt notice much difference and honestly, i cant tell them apart if they excel in the mid range LOL
Trebles: Still not the best, but i must say it sound abit better than stock. The KZ cables i've used actually dont really improve much in the upper regions as they are copper (? unsure if the material really matters or its a placebo effect, but i havent had any silver replacement cables at the moment, and will update once i have a good listen to a recabled one).
The cable replacement did smoothen up the bass, with minimal impact to the highs. I would definitely love the highs to be more apparent but i definitely prefer this version compared to stock. To compare this with the recabled SHE3800, E808+ and the taobao replacement version of recabled PK2, i would probably place it joint 1st with the SHE3800 but the SHE3800 is heavily retuned to my taste. The E808+ abit behind on 3rd, and the PK2 4th as the shell is too hollow and made the bass very airy. I might not be a basshead but honestly listening to the Walnut and all the bassy buds made me brain-burnt to like them LOL.