Thanks to for an idea from
@Barusu Lamperouge I removed acoustic filter of KS1 and bass resonance compression problem is gone!
The exactly Same issue & solutions to Moondrop Aria.
Now KS1 comes to par with TRN MT1.
Asp just received KS2 and would do same mod if the bass is compressed with the filter.
KBEAR seemed recommending AZLA Xelastec as KS series eartips which I found it actually matches perfectly. KS1’s bass is boomy so Xelastec well keep those boomy basses in tact.
[Edit]
KS2 out of box impression:
-bass is cleaner than KS1, still some sign of mud, So I removed acoustic filter just like KS1, now it got tamed and very controlled transients
-some peaks around 7khz, not too offending.
-basic signature will be W-shape with sub-bass rolled, 3khz pinna gain & 6khz concha gain compensation dip.
-KS2 being a W-shape focused yet not spot hitting pretty conservative approach
-Unique diffusion field, wide but not natural, feels like a Sennheiser’s symphony hall effect, this matches with large scale orchestral
-The treble responses reminds me of KBEAR Lark 4K, it has 4khz peak, in a bit energetic form
What’s so special?
(After removing filter)
-“Direct” sound injection from sub-bass range all the way to the treble, because BA unit is located just like Lark(4k) on the rim of nozzle, makes very immersive experience
-W-shaped tuned yet not too offending tuning will welcome audiences looking for “energetic but not exhausting, smooth yet resolving all rounder”
tentative out of box impression is as good as Lark. Means after burn-in, KS2 may slide all the way up to B- (70s/100) scale, just like Lark sisters (4K& Lark 2020)